/**
- * @class Ext.String
- *
- * A collection of useful static methods to deal with strings
- * @singleton
- */
-
-Ext.String = {
- trimRegex: /^[\x09\x0a\x0b\x0c\x0d\x20\xa0\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u2028\u2029\u202f\u205f\u3000]+|[\x09\x0a\x0b\x0c\x0d\x20\xa0\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u2028\u2029\u202f\u205f\u3000]+$/g,
- escapeRe: /('|\\)/g,
- formatRe: /\{(\d+)\}/g,
- escapeRegexRe: /([-.*+?^${}()|[\]\/\\])/g,
-
- /**
- * Convert certain characters (&, <, >, and ') to their HTML character equivalents for literal display in web pages.
- * @param {String} value The string to encode
- * @return {String} The encoded text
- * @method
- */
- htmlEncode: (function() {
- var entities = {
- '&': '&',
- '>': '>',
- '<': '<',
- '"': '"'
- }, keys = [], p, regex;
-
- for (p in entities) {
- keys.push(p);
- }
-
- regex = new RegExp('(' + keys.join('|') + ')', 'g');
-
- return function(value) {
- return (!value) ? value : String(value).replace(regex, function(match, capture) {
- return entities[capture];
- });
- };
- })(),
-
- /**
- * Convert certain characters (&, <, >, and ') from their HTML character equivalents.
- * @param {String} value The string to decode
- * @return {String} The decoded text
- * @method
- */
- htmlDecode: (function() {
- var entities = {
- '&': '&',
- '>': '>',
- '<': '<',
- '"': '"'
- }, keys = [], p, regex;
-
- for (p in entities) {
- keys.push(p);
- }
-
- regex = new RegExp('(' + keys.join('|') + '|&#[0-9]{1,5};' + ')', 'g');
-
- return function(value) {
- return (!value) ? value : String(value).replace(regex, function(match, capture) {
- if (capture in entities) {
- return entities[capture];
- } else {
- return String.fromCharCode(parseInt(capture.substr(2), 10));
- }
- });
- };
- })(),
-
- /**
- * Appends content to the query string of a URL, handling logic for whether to place
- * a question mark or ampersand.
- * @param {String} url The URL to append to.
- * @param {String} string The content to append to the URL.
- * @return (String) The resulting URL
- */
- urlAppend : function(url, string) {
- if (!Ext.isEmpty(string)) {
- return url + (url.indexOf('?') === -1 ? '?' : '&') + string;
- }
-
- return url;
- },
-
- /**
- * Trims whitespace from either end of a string, leaving spaces within the string intact. Example:
- * @example
-var s = ' foo bar ';
-alert('-' + s + '-'); //alerts "- foo bar -"
-alert('-' + Ext.String.trim(s) + '-'); //alerts "-foo bar-"
-
- * @param {String} string The string to escape
- * @return {String} The trimmed string
- */
- trim: function(string) {
- return string.replace(Ext.String.trimRegex, "");
- },
-
- /**
- * Capitalize the given string
- * @param {String} string
- * @return {String}
- */
- capitalize: function(string) {
- return string.charAt(0).toUpperCase() + string.substr(1);
- },
-
- /**
- * Truncate a string and add an ellipsis ('...') to the end if it exceeds the specified length
- * @param {String} value The string to truncate
- * @param {Number} length The maximum length to allow before truncating
- * @param {Boolean} word True to try to find a common word break
- * @return {String} The converted text
- */
- ellipsis: function(value, len, word) {
- if (value && value.length > len) {
- if (word) {
- var vs = value.substr(0, len - 2),
- index = Math.max(vs.lastIndexOf(' '), vs.lastIndexOf('.'), vs.lastIndexOf('!'), vs.lastIndexOf('?'));
- if (index !== -1 && index >= (len - 15)) {
- return vs.substr(0, index) + "...";
- }
- }
- return value.substr(0, len - 3) + "...";
- }
- return value;
- },
-
- /**
- * Escapes the passed string for use in a regular expression
- * @param {String} string
- * @return {String}
- */
- escapeRegex: function(string) {
- return string.replace(Ext.String.escapeRegexRe, "\\$1");
- },
-
- /**
- * Escapes the passed string for ' and \
- * @param {String} string The string to escape
- * @return {String} The escaped string
- */
- escape: function(string) {
- return string.replace(Ext.String.escapeRe, "\\$1");
- },
-
- /**
- * Utility function that allows you to easily switch a string between two alternating values. The passed value
- * is compared to the current string, and if they are equal, the other value that was passed in is returned. If
- * they are already different, the first value passed in is returned. Note that this method returns the new value
- * but does not change the current string.
- * <pre><code>
- // alternate sort directions
- sort = Ext.String.toggle(sort, 'ASC', 'DESC');
-
- // instead of conditional logic:
- sort = (sort == 'ASC' ? 'DESC' : 'ASC');
- </code></pre>
- * @param {String} string The current string
- * @param {String} value The value to compare to the current string
- * @param {String} other The new value to use if the string already equals the first value passed in
- * @return {String} The new value
- */
- toggle: function(string, value, other) {
- return string === value ? other : value;
- },
-
- /**
- * Pads the left side of a string with a specified character. This is especially useful
- * for normalizing number and date strings. Example usage:
- *
- * <pre><code>
-var s = Ext.String.leftPad('123', 5, '0');
-// s now contains the string: '00123'
- </code></pre>
- * @param {String} string The original string
- * @param {Number} size The total length of the output string
- * @param {String} character (optional) The character with which to pad the original string (defaults to empty string " ")
- * @return {String} The padded string
- */
- leftPad: function(string, size, character) {
- var result = String(string);
- character = character || " ";
- while (result.length < size) {
- result = character + result;
- }
- return result;
- },
-
- /**
- * Allows you to define a tokenized string and pass an arbitrary number of arguments to replace the tokens. Each
- * token must be unique, and must increment in the format {0}, {1}, etc. Example usage:
- * <pre><code>
-var cls = 'my-class', text = 'Some text';
-var s = Ext.String.format('<div class="{0}">{1}</div>', cls, text);
-// s now contains the string: '<div class="my-class">Some text</div>'
- </code></pre>
- * @param {String} string The tokenized string to be formatted
- * @param {String} value1 The value to replace token {0}
- * @param {String} value2 Etc...
- * @return {String} The formatted string
- */
- format: function(format) {
- var args = Ext.Array.toArray(arguments, 1);
- return format.replace(Ext.String.formatRe, function(m, i) {
- return args[i];
- });
- }
-};
-
+
/**
+ * @class String
+ *
+ * `String` is a global object that may be used to construct String instances.
+ *
+ * String objects may be created by calling the constructor `new String()`. The `String` object wraps
+ * JavaScript's string primitive data type with the methods described below. The global function
+ * `String()` can also be called without new in front to create a primitive string. String literals in
+ * JavaScript are primitive strings.
+ *
+ * Because JavaScript automatically converts between string primitives and String objects, you can call
+ * any of the methods of the `String` object on a string primitive. JavaScript automatically converts the
+ * string primitive to a temporary `String` object, calls the method, then discards the temporary String
+ * object. For example, you can use the `String.length` property on a string primitive created from a
+ * string literal:
+ *
+ * s_obj = new String(s_prim = s_also_prim = "foo");
+ *
+ * s_obj.length; // 3
+ * s_prim.length; // 3
+ * s_also_prim.length; // 3
+ * 'foo'.length; // 3
+ * "foo".length; // 3
+ *
+ * (A string literal is denoted with single or double quotation marks.)
+ *
+ * String objects can be converted to primitive strings with the `valueOf` method.
+ *
+ * String primitives and String objects give different results when evaluated as JavaScript. Primitives
+ * are treated as source code; String objects are treated as a character sequence object. For example:
+ *
+ * s1 = "2 + 2"; // creates a string primitive
+ * s2 = new String("2 + 2"); // creates a String object
+ * eval(s1); // returns the number 4
+ * eval(s2); // returns the string "2 + 2"
+ * eval(s2.valueOf()); // returns the number 4
+ *
+ * # Character access
+ *
+ * There are two ways to access an individual character in a string. The first is the `charAt` method:
+ *
+ * return 'cat'.charAt(1); // returns "a"
+ *
+ * The other way is to treat the string as an array, where each index corresponds to an individual
+ * character:
+ *
+ * return 'cat'[1]; // returns "a"
+ *
+ * The second way (treating the string as an array) is not part of ECMAScript 3. It is a JavaScript and
+ * ECMAScript 5 feature.
+ *
+ * In both cases, attempting to set an individual character won't work. Trying to set a character
+ * through `charAt` results in an error, while trying to set a character via indexing does not throw an
+ * error, but the string itself is unchanged.
+ *
+ * # Comparing strings
+ *
+ * C developers have the `strcmp()` function for comparing strings. In JavaScript, you just use the less-
+ * than and greater-than operators:
+ *
+ * var a = "a";
+ * var b = "b";
+ * if (a < b) // true
+ * print(a + " is less than " + b);
+ * else if (a > b)
+ * print(a + " is greater than " + b);
+ * else
+ * print(a + " and " + b + " are equal.");
+ *
+ * A similar result can be achieved using the `localeCompare` method inherited by `String` instances.
+ *
+ * <div class="notice">
+ * Documentation for this class comes from <a href="https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/String">MDN</a>
+ * and is available under <a href="http://creativecommons.org/licenses/by-sa/2.0/">Creative Commons: Attribution-Sharealike license</a>.
+ * </div>
+ */
+
+/**
+ * @method constructor
+ * Creates new String object.
+ * @param {Object} value The value to wrap into String object.
+ */
+
+//Methods
+
+/**
+ * @method fromCharCode
+ * Returns a string created by using the specified sequence of Unicode values.
+ *
+ * This method returns a string and not a `String` object.
+ *
+ * Because `fromCharCode` is a static method of `String`, you always use it as `String.fromCharCode()`,
+ * rather than as a method of a `String` object you created.
+ *
+ * Although most common Unicode values can be represented in a fixed width system/with one number (as
+ * expected early on during JavaScript standardization) and `fromCharCode()` can be used to return a
+ * single character for the most common values (i.e., UCS-2 values which are the subset of UTF-16 with
+ * the most common characters), in order to deal with ALL legal Unicode values, `fromCharCode()` alone
+ * is inadequate. Since the higher code point characters use two (lower value) "surrogate" numbers to
+ * form a single character, `fromCharCode()` can be used to return such a pair and thus adequately
+ * represent these higher valued characters.
+ *
+ * Be aware, therefore, that the following utility function to grab the accurate character even for
+ * higher value code points, may be returning a value which is rendered as a single character, but
+ * which has a string count of two (though usually the count will be one).
+ *
+ * // String.fromCharCode() alone cannot get the character at such a high code point
+ * // The following, on the other hand, can return a 4-byte character as well as the
+ * // usual 2-byte ones (i.e., it can return a single character which actually has
+ * // a string length of 2 instead of 1!)
+ * alert(fixedFromCharCode(0x2F804)); // or 194564 in decimal
+ *
+ * function fixedFromCharCode (codePt) {
+ * if (codePt > 0xFFFF) {
+ * codePt -= 0x10000;
+ * return String.fromCharCode(0xD800 + (codePt >> 10), 0xDC00 +
+ * (codePt & 0x3FF));
+ * }
+ * else {
+ * return String.fromCharCode(codePt);
+ * }
+ * }
+ *
+ * The following example returns the string "ABC".
+ *
+ * String.fromCharCode(65,66,67)
+ *
+ * @param {Number} num1, ..., numN A sequence of numbers that are Unicode values.
+ * @return {String} String containing characters from encoding.
+ */
+
+//Properties
+
+/**
+ * @property {Number} length
+ * Reflects the length of the string.
+ *
+ * This property returns the number of code units in the string. UTF-16, the string format used by JavaScript, uses a single 16-bit
+ * code unit to represent the most common characters, but needs to use two code units for less commonly-used characters, so it's
+ * possible for the value returned by `length` to not match the actual number of characters in the string.
+ *
+ * For an empty string, `length` is 0.
+ *
+ * var x = "Netscape";
+ * var empty = "";
+ *
+ * console.log("Netspace is " + x.length + " code units long");
+ * console.log("The empty string is has a length of " + empty.length); // should be 0
+ */
+
+//Methods
+
+/**
+ * @method charAt
+ * Returns the character at the specified index.
+ *
+ * Characters in a string are indexed from left to right. The index of the first character is 0, and
+ * the index of the last character in a string called `stringName` is `stringName.length - 1`. If the
+ * index you supply is out of range, JavaScript returns an empty string.
+ *
+ * The following example displays characters at different locations in the string "Brave new world":
+ *
+ * var anyString="Brave new world";
+ *
+ * document.writeln("The character at index 0 is '" + anyString.charAt(0) + "'");
+ * document.writeln("The character at index 1 is '" + anyString.charAt(1) + "'");
+ * document.writeln("The character at index 2 is '" + anyString.charAt(2) + "'");
+ * document.writeln("The character at index 3 is '" + anyString.charAt(3) + "'");
+ * document.writeln("The character at index 4 is '" + anyString.charAt(4) + "'");
+ * document.writeln("The character at index 999 is '" + anyString.charAt(999) + "'");
+ *
+ * These lines display the following:
+ *
+ * The character at index 0 is 'B'
+ * The character at index 1 is 'r'
+ * The character at index 2 is 'a'
+ * The character at index 3 is 'v'
+ * The character at index 4 is 'e'
+ * The character at index 999 is ''
+ *
+ * The following provides a means of ensuring that going through a string loop always provides a whole
+ * character, even if the string contains characters that are not in the Basic Multi-lingual Plane.
+ *
+ * var str = 'A\uD87E\uDC04Z'; // We could also use a non-BMP character directly
+ * for (var i=0, chr; i < str.length; i++) {
+ * if ((chr = getWholeChar(str, i)) === false) {continue;} // Adapt this line at the top of
+ * each loop, passing in the whole string and the current iteration and returning a variable to
+ * represent the individual character
+ * alert(chr);
+ * }
+ *
+ * function getWholeChar (str, i) {
+ * var code = str.charCodeAt(i);
+ *
+ * if (isNaN(code)) {
+ * return ''; // Position not found
+ * }
+ * if (code < 0xD800 || code > 0xDFFF) {
+ * return str.charAt(i);
+ * }
+ * if (0xD800 <= code && code <= 0xDBFF) { // High surrogate (could change last hex to 0xDB7F
+ * to treat high private surrogates as single characters)
+ * if (str.length <= (i+1)) {
+ * throw 'High surrogate without following low surrogate';
+ * }
+ * var next = str.charCodeAt(i+1);
+ * if (0xDC00 > next || next > 0xDFFF) {
+ * throw 'High surrogate without following low surrogate';
+ * }
+ * return str.charAt(i)+str.charAt(i+1);
+ * }
+ * // Low surrogate (0xDC00 <= code && code <= 0xDFFF)
+ * if (i === 0) {
+ * throw 'Low surrogate without preceding high surrogate';
+ * }
+ * var prev = str.charCodeAt(i-1);
+ * if (0xD800 > prev || prev > 0xDBFF) { // (could change last hex to 0xDB7F to treat high private
+ * surrogates as single characters)
+ * throw 'Low surrogate without preceding high surrogate';
+ * }
+ * return false; // We can pass over low surrogates now as the second component in a pair which we
+ * have already processed
+ * }
+ *
+ * While the second example may be more frequently useful for those wishing to support non-BMP
+ * characters (since the above does not require the caller to know where any non-BMP character might
+ * appear), in the event that one _does_ wish, in choosing a character by index, to treat the surrogate
+ * pairs within a string as the single characters they represent, one can use the following:
+ *
+ * function fixedCharAt (str, idx) {
+ * var ret = '';
+ * str += '';
+ * var end = str.length;
+ *
+ * var surrogatePairs = /[\uD800-\uDBFF][\uDC00-\uDFFF]/g;
+ * while ((surrogatePairs.exec(str)) != null) {
+ * var li = surrogatePairs.lastIndex;
+ * if (li - 2 < idx) {
+ * idx++;
+ * }
+ * else {
+ * break;
+ * }
+ * }
+ *
+ * if (idx >= end || idx < 0) {
+ * return '';
+ * }
+ *
+ * ret += str.charAt(idx);
+ *
+ * if (/[\uD800-\uDBFF]/.test(ret) && /[\uDC00-\uDFFF]/.test(str.charAt(idx+1))) {
+ * ret += str.charAt(idx+1); // Go one further, since one of the "characters" is part of a
+ * surrogate pair
+ * }
+ * return ret;
+ * }
+ *
+ * @param {Number} index An integer between 0 and 1 less than the length of the string.
+ * @return {String} Individual character from string.
+ */
+
+/**
+ * @method charCodeAt
+ * Returns a number indicating the Unicode value of the character at the given index.
+ *
+ * Unicode code points range from 0 to 1,114,111. The first 128 Unicode code points are a direct match
+ * of the ASCII character encoding.
+ *
+ * Note that `charCodeAt` will always return a value that is less than 65,536. This is because the
+ * higher code points are represented by a pair of (lower valued) "surrogate" pseudo-characters which
+ * are used to comprise the real character. Because of this, in order to examine or reproduce the full
+ * character for individual characters of value 65,536 and above, for such characters, it is necessary
+ * to retrieve not only `charCodeAt(i)`, but also `charCodeAt(i+1)` (as if examining/reproducing a
+ * string with two letters). See example 2 and 3 below.
+ *
+ * `charCodeAt` returns `NaN` if the given index is not greater than 0 or is greater than the length of
+ * the string.
+ *
+ * Backward Compatibility with JavaScript 1.2
+ *
+ * The `charCodeAt` method returns a number indicating the ISO-Latin-1 codeset value of the character
+ * at the given index. The ISO-Latin-1 codeset ranges from 0 to 255. The first 0 to 127 are a direct
+ * match of the ASCII character set.
+ *
+ * Example 1: Using `charCodeAt`
+ *
+ * The following example returns 65, the Unicode value for A.
+ *
+ * "ABC".charCodeAt(0) // returns 65
+ *
+ * Example 2: Fixing `charCodeAt` to handle non-Basic-Multilingual-Plane characters if their presence
+ * earlier in the string is unknown
+ *
+ * This version might be used in for loops and the like when it is unknown whether non-BMP characters
+ * exist before the specified index position.
+ *
+ * function fixedCharCodeAt (str, idx) {
+ * // ex. fixedCharCodeAt ('\uD800\uDC00', 0); // 65536
+ * // ex. fixedCharCodeAt ('\uD800\uDC00', 1); // 65536
+ * idx = idx || 0;
+ * var code = str.charCodeAt(idx);
+ * var hi, low;
+ * if (0xD800 <= code && code <= 0xDBFF) { // High surrogate (could change last hex to 0xDB7F to treat high private surrogates as single characters)
+ * hi = code;
+ * low = str.charCodeAt(idx+1);
+ * if (isNaN(low)) {
+ * throw 'High surrogate not followed by low surrogate in fixedCharCodeAt()';
+ * }
+ * return ((hi - 0xD800) * 0x400) + (low - 0xDC00) + 0x10000;
+ * }
+ * if (0xDC00 <= code && code <= 0xDFFF) { // Low surrogate
+ * // We return false to allow loops to skip this iteration since should have already handled
+ * high surrogate above in the previous iteration
+ * return false;
+ * }
+ * return code;
+ * }
+ *
+ * Example 3: Fixing `charCodeAt` to handle non-Basic-Multilingual-Plane characters if their presence
+ * earlier in the string is known
+ *
+ * function knownCharCodeAt (str, idx) {
+ * str += '';
+ * var code,
+ * end = str.length;
+ *
+ * var surrogatePairs = /[\uD800-\uDBFF][\uDC00-\uDFFF]/g;
+ * while ((surrogatePairs.exec(str)) != null) {
+ * var li = surrogatePairs.lastIndex;
+ * if (li - 2 < idx) {
+ * idx++;
+ * }
+ * else {
+ * break;
+ * }
+ * }
+ *
+ * if (idx >= end || idx < 0) {
+ * return NaN;
+ * }
+ *
+ * code = str.charCodeAt(idx);
+ *
+ * var hi, low;
+ * if (0xD800 <= code && code <= 0xDBFF) {
+ * hi = code;
+ * low = str.charCodeAt(idx+1); // Go one further, since one of the "characters" is part of
+ * a surrogate pair
+ * return ((hi - 0xD800) * 0x400) + (low - 0xDC00) + 0x10000;
+ * }
+ * return code;
+ * }
+ *
+ * @param {Number} index An integer greater than 0 and less than the length of the string; if it is
+ * not a number, it defaults to 0.
+ * @return {Number} Value between 0 and 65535.
+ */
+
+/**
+ * @method concat
+ * Combines the text of two strings and returns a new string.
+ *
+ * `concat` combines the text from one or more strings and returns a new string. Changes to the text in
+ * one string do not affect the other string.
+ *
+ * The following example combines strings into a new string.
+ *
+ * var hello = "Hello, ";
+ * console.log(hello.concat("Kevin", " have a nice day.")); // Hello, Kevin have a nice day.
+ *
+ * @param {String} string2...stringN
+ * @return {String} Result of both strings.
+ */
+
+/**
+ * @method indexOf
+ * Returns the index within the calling `String` object of the first occurrence of the specified value,
+ * or -1 if not found.
+ *
+ * Characters in a string are indexed from left to right. The index of the first character is 0, and the index of the last character
+ * of a string called `stringName` is `stringName.length - 1`.
+ *
+ * "Blue Whale".indexOf("Blue") // returns 0
+ * "Blue Whale".indexOf("Blute") // returns -1
+ * "Blue Whale".indexOf("Whale",0) // returns 5
+ * "Blue Whale".indexOf("Whale",5) // returns 5
+ * "Blue Whale".indexOf("",9) // returns 9
+ * "Blue Whale".indexOf("",10) // returns 10
+ * "Blue Whale".indexOf("",11) // returns 10
+ *
+ * The `indexOf` method is case sensitive. For example, the following expression returns -1:
+ *
+ * "Blue Whale".indexOf("blue")
+ *
+ * Note that '0' doesn't evaluate to true and '-1' doesn't evaluate to false. Therefore, when checking if a specific string exists
+ * within another string the correct way to check would be:
+ *
+ * "Blue Whale".indexOf("Blue") != -1 // true
+ * "Blue Whale".indexOf("Bloe") != -1 // false
+ *
+ * The following example uses indexOf and lastIndexOf to locate values in the string "Brave new world".
+ *
+ * var anyString="Brave new world"
+ *
+ * document.write("<P>The index of the first w from the beginning is " + anyString.indexOf("w")) // Displays 8
+ * document.write("<P>The index of the first w from the end is " + anyString.lastIndexOf("w")) // Displays 10
+ * document.write("<P>The index of 'new' from the beginning is " + anyString.indexOf("new")) // Displays 6
+ * document.write("<P>The index of 'new' from the end is " + anyString.lastIndexOf("new")) // Displays 6
+ *
+ * The following example defines two string variables. The variables contain the same string except that the second string contains
+ * uppercase letters. The first `writeln` method displays 19. But because the `indexOf` method is case sensitive, the string
+ * "cheddar" is not found in `myCapString`, so the second `writeln` method displays -1.
+ *
+ * myString="brie, pepper jack, cheddar"
+ * myCapString="Brie, Pepper Jack, Cheddar"
+ * document.writeln('myString.indexOf("cheddar") is ' + myString.indexOf("cheddar"))
+ * document.writeln('<P>myCapString.indexOf("cheddar") is ' + myCapString.indexOf("cheddar"))
+ *
+ * The following example sets count to the number of occurrences of the letter x in the string str:
+ *
+ * count = 0;
+ * pos = str.indexOf("x");
+ * while ( pos != -1 ) {
+ * count++;
+ * pos = str.indexOf("x",pos+1);
+ * }
+ *
+ * @param {String} searchValue A string representing the value to search for.
+ * @param {Number} fromIndex The location within the calling string to start the search from. It can be any integer between 0 and
+ * the length of the string. The default value is 0.
+ * @return {Number} Position of specified value or -1 if not found.
+ */
+
+/**
+ * @method lastIndexOf
+ * Returns the index within the calling String object of the last occurrence of
+ * the specified value, or -1 if not found. The calling string is searched
+ * backward, starting at fromIndex.
+ *
+ * Characters in a string are indexed from left to right. The index of the first character is 0, and the index of the last character
+ * is `stringName.length - 1`.
+ *
+ * "canal".lastIndexOf("a") // returns 3
+ * "canal".lastIndexOf("a",2) // returns 1
+ * "canal".lastIndexOf("a",0) // returns -1
+ * "canal".lastIndexOf("x") // returns -1
+ *
+ * The `lastIndexOf` method is case sensitive. For example, the following expression returns -1:
+ *
+ * "Blue Whale, Killer Whale".lastIndexOf("blue")
+ *
+ * The following example uses `indexOf` and `lastIndexOf` to locate values in the string "`Brave new world`".
+ *
+ * var anyString="Brave new world"
+ *
+ * // Displays 8
+ * document.write("<P>The index of the first w from the beginning is " +
+ * anyString.indexOf("w"))
+ * // Displays 10
+ * document.write("<P>The index of the first w from the end is " +
+ * anyString.lastIndexOf("w"))
+ * // Displays 6
+ * document.write("<P>The index of 'new' from the beginning is " +
+ * anyString.indexOf("new"))
+ * // Displays 6
+ * document.write("<P>The index of 'new' from the end is " +
+ * anyString.lastIndexOf("new"))
+ *
+ * @param {String} searchValue A string representing the value to search for.
+ * @param {Number} fromIndex The location within the calling string to start the search from, indexed from left to right. It can
+ * be any integer between 0 and the length of the string. The default value is the length of the string.
+ * @return {Number}
+ */
+
+/**
+ * @method localeCompare
+ * Returns a number indicating whether a reference string comes before or after or is the same as the
+ * given string in sort order.
+ *
+ * Returns a number indicating whether a reference string comes before or after or is the same as the
+ * given string in sort order. Returns -1 if the string occurs earlier in a sort than `compareString`,
+ * returns 1 if the string occurs afterwards in such a sort, and returns 0 if they occur at the same
+ * level.
+ *
+ * The following example demonstrates the different potential results for a string occurring before,
+ * after, or at the same level as another:
+ *
+ * alert('a'.localeCompare('b')); // -1
+ * alert('b'.localeCompare('a')); // 1
+ * alert('b'.localeCompare('b')); // 0
+ *
+ * @param {String} compareString The string against which the referring string is comparing.
+ * @return {Number} Returns -1 if the string occurs earlier in a sort than
+ * compareString, returns 1 if the string occurs afterwards in such a sort, and
+ * returns 0 if they occur at the same level.
+ */
+
+/**
+ * @method match
+ * Used to match a regular expression against a string.
+ *
+ * If the regular expression does not include the `g` flag, returns the same result as `regexp.exec(string)`.
+ *
+ * If the regular expression includes the `g` flag, the method returns an Array containing all matches. If there were no matches,
+ * the method returns `null`.
+ *
+ * The returned {@link Array} has an extra `input` property, which contains the regexp that generated it as a result. In addition,
+ * it has an `index` property, which represents the zero-based index of the match in the string.
+ *
+ * In the following example, `match` is used to find "Chapter" followed by 1 or more numeric characters followed by a decimal point
+ * and numeric character 0 or more times. The regular expression includes the `i` flag so that case will be ignored.
+ *
+ * str = "For more information, see Chapter 3.4.5.1";
+ * re = /(chapter \d+(\.\d)*)/i;
+ * found = str.match(re);
+ * document.write(found);
+ *
+ * This returns the array containing Chapter 3.4.5.1,Chapter 3.4.5.1,.1
+ *
+ * "`Chapter 3.4.5.1`" is the first match and the first value remembered from `(Chapter \d+(\.\d)*)`.
+ *
+ * "`.1`" is the second value remembered from `(\.\d)`.
+ *
+ * The following example demonstrates the use of the global and ignore case flags with `match`. All letters A through E and a
+ * through e are returned, each its own element in the array
+ *
+ * var str = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
+ * var regexp = /[A-E]/gi;
+ * var matches_array = str.match(regexp);
+ * document.write(matches_array);
+ *
+ * `matches_array` now equals `['A', 'B', 'C', 'D', 'E', 'a', 'b', 'c', 'd', 'e']`.
+ *
+ * @param {RegExp} regexp A {@link RegExp} object. If a non-RegExp object `obj` is passed, it is
+ * implicitly converted to a RegExp by using `new RegExp(obj)`.
+ * @return {Array} Contains results of the match (if any).
+ */
+
+/**
+ * @method replace
+ * Used to find a match between a regular expression and a string, and to replace the matched substring
+ * with a new substring.
+ *
+ * This method does not change the `String` object it is called on. It simply returns a new string.
+ *
+ * To perform a global search and replace, either include the `g` flag in the regular expression or if
+ * the first parameter is a string, include `g` in the flags parameter.
+ *
+ * The replacement string can include the following special replacement patterns:
+ *
+ * | Pattern | Inserts
+ * |:--------------|:--------------------------------------------------------------------------------------
+ * | `$$` | Inserts a `$`.
+ * | `$&` | Inserts the matched substring.
+ * | `$`` | Inserts the portion of the string that precedes the matched substring.
+ * | `$'` | Inserts the portion of the string that follows the matched substring.
+ * | `$n` or `$nn` | Where `n` or `nn` are decimal digits, inserts the _n_th parenthesized submatch string, provided the first
+ * | | argument was a `RegExp` object.
+ *
+ * You can specify a function as the second parameter. In this case, the function will be invoked after the match has been
+ * performed. The function's result (return value) will be used as the replacement string. (Note: the above-mentioned special
+ * replacement patterns do not apply in this case.) Note that the function will be invoked multiple times for each full match to be
+ * replaced if the regular expression in the first parameter is global.
+ *
+ * The arguments to the function are as follows:
+ *
+ * | Possible Name | Supplied Value
+ * |:--------------|:--------------------------------------------------------------------------------------
+ * | `str` | The matched substring. (Corresponds to `$&` above.)
+ * | `p1, p2, ...` | The _n_th parenthesized submatch string, provided the first argument to replace was a `RegExp` object.
+ * | | (Correspond to $1, $2, etc. above.)
+ * | `offset` | The offset of the matched substring within the total string being examined. (For example, if the total string
+ * | | was "`abcd`", and the matched substring was "`bc`", then this argument will be 1.)
+ * | `s` | The total string being examined.
+ *
+ * (The exact number of arguments will depend on whether the first argument was a `RegExp` object and, if so, how many parenthesized
+ * submatches it specifies.)
+ *
+ * The following example will set `newString` to "`XXzzzz - XX , zzzz`":
+ *
+ * function replacer(str, p1, p2, offset, s)
+ * {
+ * return str + " - " + p1 + " , " + p2;
+ * }
+ * var newString = "XXzzzz".replace(/(X*)(z*)/, replacer);
+ *
+ * In the following example, the regular expression includes the global and ignore case flags which permits replace to replace each
+ * occurrence of 'apples' in the string with 'oranges'.
+ *
+ * var re = /apples/gi;
+ * var str = "Apples are round, and apples are juicy.";
+ * var newstr = str.replace(re, "oranges");
+ * print(newstr);
+ *
+ * In this version, a string is used as the first parameter and the global and ignore case flags are specified in the flags
+ * parameter.
+ *
+ * var str = "Apples are round, and apples are juicy.";
+ * var newstr = str.replace("apples", "oranges", "gi");
+ * print(newstr);
+ *
+ * Both of these examples print "oranges are round, and oranges are juicy."
+ *
+ * In the following example, the regular expression is defined in replace and includes the ignore case flag.
+ *
+ * var str = "Twas the night before Xmas...";
+ * var newstr = str.replace(/xmas/i, "Christmas");
+ * print(newstr);
+ *
+ * This prints "Twas the night before Christmas..."
+ *
+ * The following script switches the words in the string. For the replacement text, the script uses the $1 and $2 replacement
+ * patterns.
+ *
+ * var re = /(\w+)\s(\w+)/;
+ * var str = "John Smith";
+ * var newstr = str.replace(re, "$2, $1");
+ * print(newstr);
+ *
+ * This prints "Smith, John".
+ *
+ * In this example, all occurrences of capital letters in the string are converted to lower case, and a hyphen is inserted just
+ * before the match location. The important thing here is that additional operations are needed on the matched item before it is
+ * given back as a replacement.
+ *
+ * The replacement function accepts the matched snippet as its parameter, and uses it to transform the case and concatenate the
+ * hyphen before returning.
+ *
+ * function styleHyphenFormat(propertyName)
+ * {
+ * function upperToHyphenLower(match)
+ * {
+ * return '-' + match.toLowerCase();
+ * }
+ * return propertyName.replace(/[A-Z]/, upperToHyphenLower);
+ * }
+ *
+ * Given `styleHyphenFormat('borderTop')`, this returns 'border-top'.
+ *
+ * Because we want to further transform the _result_ of the match before the final substitution is made, we must use a function.
+ * This forces the evaluation of the match prior to the `toLowerCase()` method. If we had tried to do this using the match without a
+ * function, the `toLowerCase()` would have no effect.
+ *
+ * var newString = propertyName.replace(/[A-Z]/, '-' + '$&'.toLowerCase()); // won't work
+ *
+ * This is because `'$&'.toLowerCase()` would be evaluated first as a string literal (resulting in the same `'$&'`) before using the
+ * characters as a pattern.
+ *
+ * The following example replaces a Fahrenheit degree with its equivalent Celsius degree. The Fahrenheit degree should be a number
+ * ending with F. The function returns the Celsius number ending with C. For example, if the input number is 212F, the function
+ * returns 100C. If the number is 0F, the function returns -17.77777777777778C.
+ *
+ * The regular expression `test` checks for any number that ends with F. The number of Fahrenheit degree is accessible to the
+ * function through its second parameter, `p1`. The function sets the Celsius number based on the Fahrenheit degree passed in a
+ * string to the `f2c` function. `f2c` then returns the Celsius number. This function approximates Perl's `s///e` flag.
+ *
+ * function f2c(x)
+ * {
+ * function convert(str, p1, offset, s)
+ * {
+ * return ((p1-32) * 5/9) + "C";
+ * }
+ * var s = String(x);
+ * var test = /(\d+(?:\.\d*)?)F\b/g;
+ * return s.replace(test, convert);
+ * }
+ *
+ * @param {RegExp} regexp A RegExp object. The match is replaced by the return value of parameter #2.
+ * @param {String} substr A String that is to be replaced by `newSubStr`.
+ * @param {String} newSubStr The String that replaces the substring received from parameter #1. A
+ * number of special replacement patterns are supported; see the "Specifying a string as a parameter"
+ * section below.
+ * @param {Function} function A function to be invoked to create the new substring (to put in place
+ * of the substring received from parameter #1). The arguments supplied to this function are described
+ * in the "Specifying a function as a parameter" section below.
+ * @return {String} String of matched replaced items.
+ */
+
+/**
+ * @method search
+ * Executes the search for a match between a regular expression and a specified string.
+ *
+ * If successful, search returns the index of the regular expression inside the string. Otherwise, it
+ * returns -1.
+ *
+ * When you want to know whether a pattern is found in a string use search (similar to the regular
+ * expression `test` method); for more information (but slower execution) use `match` (similar to the
+ * regular expression `exec` method).
+ *
+ * The following example prints a message which depends on the success of the test.
+ *
+ * function testinput(re, str){
+ * if (str.search(re) != -1)
+ * midstring = " contains ";
+ * else
+ * midstring = " does not contain ";
+ * document.write (str + midstring + re);
+ * }
+ *
+ * @param {RegExp} regexp A regular expression object. If a non-RegExp object obj is passed, it is
+ * implicitly converted to a RegExp by using `new RegExp(obj)`.
+ * @return {Number} If successful, search returns the index of the regular
+ * expression inside the string. Otherwise, it returns -1.
+ */
+
+/**
+ * @method slice
+ * Extracts a section of a string and returns a new string.
+ *
+ * `slice` extracts the text from one string and returns a new string. Changes to the text in one
+ * string do not affect the other string.
+ *
+ * `slice` extracts up to but not including `endSlice`. `string.slice(1,4)` extracts the second
+ * character through the fourth character (characters indexed 1, 2, and 3).
+ *
+ * As a negative index, `endSlice` indicates an offset from the end of the string. `string.slice(2,-1)`
+ * extracts the third character through the second to last character in the string.
+ *
+ * The following example uses slice to create a new string.
+ *
+ * // assumes a print function is defined
+ * var str1 = "The morning is upon us.";
+ * var str2 = str1.slice(4, -2);
+ * print(str2);
+ *
+ * This writes:
+ *
+ * morning is upon u
+ *
+ * @param {Number} beginSlice The zero-based index at which to begin extraction.
+ * @param {Number} endSlice The zero-based index at which to end extraction. If omitted, `slice`
+ * extracts to the end of the string.
+ * @return {String} All characters from specified start up to (but excluding)
+ * end.
+ */
+
+/**
+ * @method split
+ * Splits a `String` object into an array of strings by separating the string into substrings.
+ *
+ * The `split` method returns the new array.
+ *
+ * When found, `separator` is removed from the string and the substrings are returned in an array. If
+ * `separator` is omitted, the array contains one element consisting of the entire string.
+ *
+ * If `separator` is a regular expression that contains capturing parentheses, then each time separator
+ * is matched the results (including any undefined results) of the capturing parentheses are spliced
+ * into the output array. However, not all browsers support this capability.
+ *
+ * Note: When the string is empty, `split` returns an array containing one empty string, rather than an
+ * empty array.
+ *
+ * The following example defines a function that splits a string into an array of strings using the
+ * specified separator. After splitting the string, the function displays messages indicating the
+ * original string (before the split), the separator used, the number of elements in the array, and the
+ * individual array elements.
+ *
+ * function splitString(stringToSplit,separator)
+ * {
+ * var arrayOfStrings = stringToSplit.split(separator);
+ * print('The original string is: "' + stringToSplit + '"');
+ * print('The separator is: "' + separator + '"');
+ * print("The array has " + arrayOfStrings.length + " elements: ");
+ *
+ * for (var i=0; i < arrayOfStrings.length; i++)
+ * print(arrayOfStrings[i] + " / ");
+ * }
+ *
+ * var tempestString = "Oh brave new world that has such people in it.";
+ * var monthString = "Jan,Feb,Mar,Apr,May,Jun,Jul,Aug,Sep,Oct,Nov,Dec";
+ *
+ * var space = " ";
+ * var comma = ",";
+ *
+ * splitString(tempestString, space);
+ * splitString(tempestString);
+ * splitString(monthString, comma);
+ *
+ * This example produces the following output:
+ *
+ * The original string is: "Oh brave new world that has such people in it."
+ * The separator is: " "
+ * The array has 10 elements: Oh / brave / new / world / that / has / such / people / in / it. /
+ *
+ * The original string is: "Oh brave new world that has such people in it."
+ * The separator is: "undefined"
+ * The array has 1 elements: Oh brave new world that has such people in it. /
+ *
+ * The original string is: "Jan,Feb,Mar,Apr,May,Jun,Jul,Aug,Sep,Oct,Nov,Dec"
+ * The separator is: ","
+ * The array has 12 elements: Jan / Feb / Mar / Apr / May / Jun / Jul / Aug / Sep / Oct / Nov / Dec /
+ *
+ * In the following example, `split` looks for 0 or more spaces followed by a semicolon followed by 0
+ * or more spaces and, when found, removes the spaces from the string. nameList is the array returned
+ * as a result of split.
+ *
+ * var names = "Harry Trump ;Fred Barney; Helen Rigby ; Bill Abel ;Chris Hand ";
+ * print(names);
+ * var re = /\s*;\s*\/;
+ * var nameList = names.split(re);
+ * print(nameList);
+ *
+ * This prints two lines; the first line prints the original string, and the second line prints the
+ * resulting array.
+ *
+ * Harry Trump ;Fred Barney; Helen Rigby ; Bill Abel ;Chris Hand
+ * Harry Trump,Fred Barney,Helen Rigby,Bill Abel,Chris Hand
+ *
+ * In the following example, split looks for 0 or more spaces in a string and returns the first 3
+ * splits that it finds.
+ *
+ * var myString = "Hello World. How are you doing?";
+ * var splits = myString.split(" ", 3);
+ * print(splits);
+ *
+ * This script displays the following:
+ *
+ * Hello,World.,How
+ *
+ * If `separator` contains capturing parentheses, matched results are returned in the array.
+ *
+ * var myString = "Hello 1 word. Sentence number 2.";
+ * var splits = myString.split(/(\d)/);
+ * print(splits);
+ *
+ * This script displays the following:
+ *
+ * Hello ,1, word. Sentence number ,2, .
+ *
+ * @param {String} seperator Specifies the character to use for separating the string. The separator is treated as a string or a
+ * regular expression. If separator is omitted, the array returned contains one element consisting of the entire string.
+ * @param {Number} limit Integer specifying a limit on the number of splits to be found. The split method still splits on every
+ * match of separator, but it truncates the returned array to at most limit elements.
+ * @return {Array} Substrings are returned in an array.
+ */
+
+/**
+ * @method substr
+ * Returns the characters in a string beginning at the specified location through the specified number
+ * of characters.
+ *
+ * `start` is a character index. The index of the first character is 0, and the index of the last
+ * character is 1 less than the length of the string. `substr` begins extracting characters at start
+ * and collects length characters (unless it reaches the end of the string first, in which case it will
+ * return fewer).
+ *
+ * If `start` is positive and is greater than or equal to the length of the string, `substr` returns an
+ * empty string.
+ *
+ * If `start` is negative, `substr` uses it as a character index from the end of the string. If start
+ * is negative and abs(start) is larger than the length of the string, `substr` uses 0 as the start
+ * index. Note: the described handling of negative values of the start argument is not supported by
+ * Microsoft JScript.
+ *
+ * If length is 0 or negative, `substr` returns an empty string. If length is omitted, `substr`
+ * extracts characters to the end of the string.
+ *
+ * Consider the following script:
+ *
+ * // assumes a print function is defined
+ * var str = "abcdefghij";
+ * print("(1,2): " + str.substr(1,2));
+ * print("(-3,2): " + str.substr(-3,2));
+ * print("(-3): " + str.substr(-3));
+ * print("(1): " + str.substr(1));
+ * print("(-20, 2): " + str.substr(-20,2));
+ * print("(20, 2): " + str.substr(20,2));
+ *
+ * This script displays:
+ *
+ * (1,2): bc
+ * (-3,2): hi
+ * (-3): hij
+ * (1): bcdefghij
+ * (-20, 2): ab
+ * (20, 2):
+ *
+ * @param {Number} start Location at which to begin extracting characters.
+ * @param {Number} length The number of characters to extract.
+ * @return {String} Modified string.
+ */
+
+/**
+ * @method substring
+ * Returns the characters in a string between two indexes into the string.
+ *
+ * substring extracts characters from indexA up to but not including indexB. In particular:
+ * * If `indexA` equals `indexB`, `substring` returns an empty string.
+ * * If `indexB` is omitted, substring extracts characters to the end of the string.
+ * * If either argument is less than 0 or is `NaN`, it is treated as if it were 0.
+ * * If either argument is greater than `stringName.length`, it is treated as if it were
+ * `stringName.length`.
+ *
+ * If `indexA` is larger than `indexB`, then the effect of substring is as if the two arguments were
+ * swapped; for example, `str.substring(1, 0) == str.substring(0, 1)`.
+ *
+ * The following example uses substring to display characters from the string "Sencha":
+ *
+ * // assumes a print function is defined
+ * var anyString = "Sencha";
+ *
+ * // Displays "Sen"
+ * print(anyString.substring(0,3));
+ * print(anyString.substring(3,0));
+ *
+ * // Displays "cha"
+ * print(anyString.substring(3,6));
+ * print(anyString.substring(6,3));
+ *
+ * // Displays "Sencha"
+ * print(anyString.substring(0,6));
+ * print(anyString.substring(0,10));
+ *
+ * The following example replaces a substring within a string. It will replace both individual
+ * characters and `substrings`. The function call at the end of the example changes the string "Brave
+ * New World" into "Brave New Web".
+ *
+ * function replaceString(oldS, newS, fullS) {
+ * // Replaces oldS with newS in the string fullS
+ * for (var i = 0; i < fullS.length; i++) {
+ * if (fullS.substring(i, i + oldS.length) == oldS) {
+ * fullS = fullS.substring(0, i) + newS + fullS.substring(i + oldS.length,
+ * fullS.length);
+ * }
+ * }
+ * return fullS;
+ * }
+ *
+ * replaceString("World", "Web", "Brave New World");
+ *
+ * @param {Number} indexA An integer between 0 and one less than the length of the string.
+ * @param {Number} indexB (optional) An integer between 0 and the length of the string.
+ * @return {String} Returns the characters in a string between two indexes into the string.
+ */
+
+/**
+ * @method toLocaleLowerCase
+ * The characters within a string are converted to lower case while respecting the current locale. For
+ * most languages, this will return the same as `toLowerCase`.
+ *
+ * The `toLocaleLowerCase` method returns the value of the string converted to lower case according to
+ * any locale-specific case mappings. `toLocaleLowerCase` does not affect the value of the string
+ * itself. In most cases, this will produce the same result as `toLowerCase()`, but for some locales,
+ * such as Turkish, whose case mappings do not follow the default case mappings in Unicode, there may
+ * be a different result.
+ *
+ * The following example displays the string "sencha":
+ *
+ * var upperText="sencha";
+ * document.write(upperText.toLocaleLowerCase());
+ *
+ * @return {String} Returns value of the string in lowercase.
+ */
+
+/**
+ * @method toLocaleUpperCase
+ * The characters within a string are converted to upper case while respecting the current locale. For
+ * most languages, this will return the same as `toUpperCase`.
+ *
+ * The `toLocaleUpperCase` method returns the value of the string converted to upper case according to
+ * any locale-specific case mappings. `toLocaleUpperCase` does not affect the value of the string
+ * itself. In most cases, this will produce the same result as `toUpperCase()`, but for some locales,
+ * such as Turkish, whose case mappings do not follow the default case mappings in Unicode, there may
+ * be a different result.
+ *
+ * The following example displays the string "SENCHA":
+ *
+ * var lowerText="sencha";
+ * document.write(lowerText.toLocaleUpperCase());
+ *
+ * @return {String} Returns value of the string in uppercase.
+ */
+
+/**
+ * @method toLowerCase
+ * Returns the calling string value converted to lower case.
+ *
+ * The `toLowerCase` method returns the value of the string converted to lowercase. `toLowerCase` does
+ * not affect the value of the string itself.
+ *
+ * The following example displays the lowercase string "sencha":
+ *
+ * var upperText="SENCHA";
+ * document.write(upperText.toLowerCase());
+ *
+ * @return {String} Returns value of the string in lowercase.
+ */
+
+/**
+ * @method toString
+ * Returns a string representing the specified object. Overrides the `Object.toString` method.
+ *
+ * The `String` object overrides the `toString` method of the `Object` object; it does not inherit
+ * `Object.toString`. For `String` objects, the `toString` method returns a string representation of
+ * the object.
+ *
+ * The following example displays the string value of a String object:
+ *
+ * x = new String("Hello world");
+ * alert(x.toString()) // Displays "Hello world"
+ *
+ * @return {String} A string representation of the object.
+ */
+
+/**
+ * @method toUpperCase
+ * Returns the calling string value converted to uppercase.
+ *
+ * The `toUpperCase` method returns the value of the string converted to uppercase. `toUpperCase` does
+ * not affect the value of the string itself.
+ *
+ * The following example displays the string "SENCHA":
+
+ * var lowerText="sencha";
+ * document.write(lowerText.toUpperCase());
+ *
+ * @return {String} Returns value of the string in uppercase.
+ */
+
+/**
+ * @method valueOf
+ * Returns the primitive value of the specified object. Overrides the `Object.valueOf` method.
+ *
+ * The `valueOf` method of String returns the primitive value of a `String` object as a string data
+ * type. This value is equivalent to `String.toString`.
+ *
+ * This method is usually called internally by JavaScript and not explicitly in code.
+ *
+ * x = new String("Hello world");
+ * alert(x.valueOf()) // Displays "Hello world"
+ *
+ * @return {String} Returns value of string.
+ */