- <div class="body-wrap">
- <div class="top-tools">
- <a class="inner-link" href="#Function-props"><img src="../resources/images/default/s.gif" class="item-icon icon-prop">Properties</a>
- <a class="inner-link" href="#Function-methods"><img src="../resources/images/default/s.gif" class="item-icon icon-method">Methods</a>
- <a class="inner-link" href="#Function-events"><img src="../resources/images/default/s.gif" class="item-icon icon-event">Events</a>
- <a class="bookmark" href="../docs/?class=Function"><img src="../resources/images/default/s.gif" class="item-icon icon-fav">Direct Link</a>
- </div>
- <h1>Class Function</h1>
- <table cellspacing="0">
- <tr><td class="label">Package:</td><td class="hd-info">Global</td></tr>
- <tr><td class="label">Defined In:</td><td class="hd-info"><a href="../src/Ext.js" target="_blank">Ext.js</a></td></tr>
- <tr><td class="label">Class:</td><td class="hd-info">Function</td></tr>
- <tr><td class="label">Extends:</td><td class="hd-info">Object</td></tr>
- </table>
- <div class="description">
- These functions are available on every Function object (any JavaScript function). </div>
-
- <div class="hr"></div>
- <a id="Function-props"></a>
- <h2>Public Properties</h2>
- <div class="no-members">This class has no public properties.</div> <a id="Function-methods"></a>
- <h2>Public Methods</h2>
- <table cellspacing="0" class="member-table">
- <tr>
- <th class="sig-header" colspan="2">Method</th>
- <th class="msource-header">Defined By</th>
- </tr>
- <tr class="method-row expandable">\r
- <td class="micon"><a class="exi" href="#expand"> </a></td>\r
- <td class="sig">\r
- <a id="Function-createCallback"></a>\r
- <b>createCallback</b>() : Function <div class="mdesc">\r
- <div class="short">Creates a callback that passes arguments[0], arguments[1], arguments[2], ...
-Call directly on any function. Example: ...</div>\r
- <div class="long">\r
- Creates a callback that passes arguments[0], arguments[1], arguments[2], ...
+<div xmlns:ext="http://www.extjs.com" class="body-wrap"><h1>Class <a href="source/Ext-more.html#cls-Function">Function</a></h1><table cellspacing="0"><tr><td class="label">Package:</td><td class="hd-info">Global</td></tr><tr><td class="label">Defined In:</td><td class="hd-info">Ext-more.js, Ext.js</td></tr><tr><td class="label">Class:</td><td class="hd-info"><a href="source/Ext-more.html#cls-Function">Function</a></td></tr><tr><td class="label">Extends:</td><td class="hd-info">Object</td></tr></table><div class="description">These functions are available on every Function object (any JavaScript function).</div><div class="hr"></div><a id="Function-props"></a><h2>Public Properties</h2><div class="no-members">This class has no public properties.</div><a id="Function-methods"></a><h2>Public Methods</h2><table cellspacing="0" class="member-table"><tbody><tr><th colspan="2" class="sig-header">Method</th><th class="msource-header">Defined By</th></tr><tr class="method-row expandable "><td class="micon"><a href="#expand" class="exi"> </a></td><td class="sig"><a id="Function-createCallback"></a><b><a href="source/Ext.html#method-Function-createCallback">createCallback</a></b>()
+ :
+ Function<div class="mdesc"><div class="short">Creates a callback that passes arguments[0], arguments[1], arguments[2], ...
+Call directly on any function. Example: ...</div><div class="long">Creates a callback that passes arguments[0], arguments[1], arguments[2], ...
Call directly on any function. Example: <code>myFunction.createCallback(arg1, arg2)</code>
Will create a function that is bound to those 2 args. <b>If a specific scope is required in the
-callback, use <a ext:cls="Function" ext:member="createDelegate" href="output/Function.html#createDelegate">createDelegate</a> instead.</b> The function returned by createCallback always
+callback, use <a href="output/Function.html#Function-createDelegate" ext:member="createDelegate" ext:cls="Function">createDelegate</a> instead.</b> The function returned by createCallback always
executes in the window scope.
<p>This method is required when you want to pass arguments to a callback function. If no arguments
are needed, you can simply pass a reference to the function as a callback (e.g., callback: myFn).
However, if you tried to pass a function with arguments (e.g., callback: myFn(arg1, arg2)) the function
would simply execute immediately when the code is parsed. Example usage:
-<pre><code>var sayHi = <b>function</b>(name){
+<pre><code><b>var</b> sayHi = <b>function</b>(name){
alert(<em>'Hi, '</em> + name);
}
text: <em>'Say Hi'</em>,
renderTo: Ext.getBody(),
handler: sayHi.createCallback(<em>'Fred'</em>)
-});</code></pre> <div class="mdetail-params">\r
- <strong>Parameters:</strong>\r
- <ul><li>None.</li> </ul>\r
- <strong>Returns:</strong>\r
- <ul>\r
- <li><code>Function</code><div class="sub-desc">The new function</div></li>\r
- </ul>\r
- </div>\r
- </div>\r
- </div>\r
- </td>\r
- <td class="msource">Function</td>\r
- </tr>\r
- <tr class="method-row alt expandable">\r
- <td class="micon"><a class="exi" href="#expand"> </a></td>\r
- <td class="sig">\r
- <a id="Function-createDelegate"></a>\r
- <b>createDelegate</b>( <span class="optional" title="Optional">[<code>Object obj</code>]</span>, <span class="optional" title="Optional">[<code>Array args</code>]</span>, <span class="optional" title="Optional">[<code>Boolean/Number appendArgs</code>]</span> ) : Function <div class="mdesc">\r
- <div class="short">Creates a delegate (callback) that sets the scope to obj.
-Call directly on any function. Example: this.myFunction.cre...</div>\r
- <div class="long">\r
- Creates a delegate (callback) that sets the scope to obj.
+});</code></pre><div class="mdetail-params"><strong>Parameters:</strong><ul><li>None.</li></ul><strong>Returns:</strong><ul><li><code>Function</code><div class="sub-desc">The new function</div></li></ul></div></div></div></td><td class="msource">Function</td></tr><tr class="method-row expandable "><td class="micon"><a href="#expand" class="exi"> </a></td><td class="sig"><a id="Function-createDelegate"></a><b><a href="source/Ext.html#method-Function-createDelegate">createDelegate</a></b>( <span title="Optional" class="optional">[<code>Object scope</code>]</span>, <span title="Optional" class="optional">[<code>Array args</code>]</span>, <span title="Optional" class="optional">[<code>Boolean/Number appendArgs</code>]</span> )
+ :
+ Function<div class="mdesc"><div class="short">Creates a delegate (callback) that sets the scope to obj.
+Call directly on any function. Example: this.myFunction.cre...</div><div class="long">Creates a delegate (callback) that sets the scope to obj.
Call directly on any function. Example: <code>this.myFunction.createDelegate(this, [arg1, arg2])</code>
Will create a function that is automatically scoped to obj so that the <tt>this</tt> variable inside the
callback points to obj. Example usage:
-<pre><code>var sayHi = <b>function</b>(name){
- <i>// Note <b>this</b> use of <em>"<b>this</b>.text"</em> here. This <b>function</b> expects to</i>
- <i>// execute within a scope that contains a text property. In <b>this</b></i>
- <i>// example, the <em>"<b>this</b>"</em> variable is pointing to the btn object that</i>
+<pre><code><b>var</b> sayHi = <b>function</b>(name){
+ <i>// Note this use of <em>"this.text"</em> here. This <b>function</b> expects to</i>
+ <i>// execute within a scope that contains a text property. In this</i>
+ <i>// example, the <em>"this"</em> variable is pointing to the btn object that</i>
<i>// was passed <b>in</b> createDelegate below.</i>
- alert(<em>'Hi, '</em> + name + <em>'. You clicked the "'</em> + <b>this</b>.text + <em>'" button.'</em>);
+ alert(<em>'Hi, '</em> + name + <em>'. You clicked the <em>"'</em> + this.text + <em>'"</em> button.'</em>);
}
<b>var</b> btn = <b>new</b> Ext.Button({
<i>// This callback will execute <b>in</b> the scope of the</i>
<i>// button instance. Clicking the button alerts</i>
<i>// <em>"Hi, Fred. You clicked the "</em>Say Hi<em>" button."</em></i>
-btn.on(<em>'click'</em>, sayHi.createDelegate(btn, [<em>'Fred'</em>]));</code></pre> <div class="mdetail-params">\r
- <strong>Parameters:</strong>\r
- <ul><li><code>obj</code> : Object<div class="sub-desc">(optional) The object for which the scope is set</div></li><li><code>args</code> : Array<div class="sub-desc">(optional) Overrides arguments for the call. (Defaults to the arguments passed by the caller)</div></li><li><code>appendArgs</code> : Boolean/Number<div class="sub-desc">(optional) if True args are appended to call args instead of overriding,
-if a number the args are inserted at the specified position</div></li> </ul>\r
- <strong>Returns:</strong>\r
- <ul>\r
- <li><code>Function</code><div class="sub-desc">The new function</div></li>\r
- </ul>\r
- </div>\r
- </div>\r
- </div>\r
- </td>\r
- <td class="msource">Function</td>\r
- </tr>\r
- <tr class="method-row expandable">\r
- <td class="micon"><a class="exi" href="#expand"> </a></td>\r
- <td class="sig">\r
- <a id="Function-createInterceptor"></a>\r
- <b>createInterceptor</b>( <code>Function fcn</code>, <span class="optional" title="Optional">[<code>Object scope</code>]</span> ) : Function <div class="mdesc">\r
- <div class="short">Creates an interceptor function. The passed fcn is called before the original one. If it returns false,
-the original ...</div>\r
- <div class="long">\r
- Creates an interceptor function. The passed fcn is called before the original one. If it returns false,
+btn.on(<em>'click'</em>, sayHi.createDelegate(btn, [<em>'Fred'</em>]));</code></pre><div class="mdetail-params"><strong>Parameters:</strong><ul><li><code>scope</code> : Object<div class="sub-desc">(optional) The scope (<code><b>this</b></code> reference) in which the function is executed.
+<b>If omitted, defaults to the browser window.</b></div></li><li><code>args</code> : Array<div class="sub-desc">(optional) Overrides arguments for the call. (Defaults to the arguments passed by the caller)</div></li><li><code>appendArgs</code> : Boolean/Number<div class="sub-desc">(optional) if True args are appended to call args instead of overriding,
+if a number the args are inserted at the specified position</div></li></ul><strong>Returns:</strong><ul><li><code>Function</code><div class="sub-desc">The new function</div></li></ul></div></div></div></td><td class="msource">Function</td></tr><tr class="method-row expandable "><td class="micon"><a href="#expand" class="exi"> </a></td><td class="sig"><a id="Function-createInterceptor"></a><b><a href="source/Ext.html#method-Function-createInterceptor">createInterceptor</a></b>( <code>Function fcn</code>, <span title="Optional" class="optional">[<code>Object scope</code>]</span> )
+ :
+ Function<div class="mdesc"><div class="short">Creates an interceptor function. The passed function is called before the original one. If it returns false,
+the orig...</div><div class="long">Creates an interceptor function. The passed function is called before the original one. If it returns false,
the original one is not called. The resulting function returns the results of the original function.
-The passed fcn is called with the parameters of the original function. Example usage:
-<pre><code>var sayHi = <b>function</b>(name){
+The passed function is called with the parameters of the original function. Example usage:
+<pre><code><b>var</b> sayHi = <b>function</b>(name){
alert(<em>'Hi, '</em> + name);
}
sayHi(<em>'Fred'</em>); <i>// alerts <em>"Hi, Fred"</em></i>
-<i>// create a <b>new</b> function that validates input without</i>
+<i>// create a <b>new</b> <b>function</b> that validates input without</i>
<i>// directly modifying the original <b>function</b>:</i>
<b>var</b> sayHiToFriend = sayHi.createInterceptor(<b>function</b>(name){
<b>return</b> name == <em>'Brian'</em>;
});
sayHiToFriend(<em>'Fred'</em>); <i>// no alert</i>
-sayHiToFriend(<em>'Brian'</em>); // alerts <em>"Hi, Brian"</em></code></pre> <div class="mdetail-params">\r
- <strong>Parameters:</strong>\r
- <ul><li><code>fcn</code> : Function<div class="sub-desc">The function to call before the original</div></li><li><code>scope</code> : Object<div class="sub-desc">(optional) The scope of the passed fcn (Defaults to scope of original function or window)</div></li> </ul>\r
- <strong>Returns:</strong>\r
- <ul>\r
- <li><code>Function</code><div class="sub-desc">The new function</div></li>\r
- </ul>\r
- </div>\r
- </div>\r
- </div>\r
- </td>\r
- <td class="msource">Function</td>\r
- </tr>\r
- <tr class="method-row alt expandable">\r
- <td class="micon"><a class="exi" href="#expand"> </a></td>\r
- <td class="sig">\r
- <a id="Function-createSequence"></a>\r
- <b>createSequence</b>( <code>Function fcn</code>, <span class="optional" title="Optional">[<code>Object scope</code>]</span> ) : Function <div class="mdesc">\r
- <div class="short">Create a combined function call sequence of the original function + the passed function.
-The resulting function retur...</div>\r
- <div class="long">\r
- Create a combined function call sequence of the original function + the passed function.
+sayHiToFriend(<em>'Brian'</em>); <i>// alerts <em>"Hi, Brian"</em></i></code></pre><div class="mdetail-params"><strong>Parameters:</strong><ul><li><code>fcn</code> : Function<div class="sub-desc">The function to call before the original</div></li><li><code>scope</code> : Object<div class="sub-desc">(optional) The scope (<code><b>this</b></code> reference) in which the passed function is executed.
+<b>If omitted, defaults to the scope in which the original function is called or the browser window.</b></div></li></ul><strong>Returns:</strong><ul><li><code>Function</code><div class="sub-desc">The new function</div></li></ul></div></div></div></td><td class="msource">Function</td></tr><tr class="method-row expandable "><td class="micon"><a href="#expand" class="exi"> </a></td><td class="sig"><a id="Function-createSequence"></a><b><a href="source/Ext-more.html#method-Function-createSequence">createSequence</a></b>( <code>Function fcn</code>, <span title="Optional" class="optional">[<code>Object scope</code>]</span> )
+ :
+ Function<div class="mdesc"><div class="short">Create a combined function call sequence of the original function + the passed function.
+The resulting function retur...</div><div class="long">Create a combined function call sequence of the original function + the passed function.
The resulting function returns the results of the original function.
The passed fcn is called with the parameters of the original function. Example usage:
-<pre><code>var sayHi = <b>function</b>(name){
+<pre><code><b>var</b> sayHi = <b>function</b>(name){
alert(<em>'Hi, '</em> + name);
}
alert(<em>'Bye, '</em> + name);
});
-sayGoodbye(<em>'Fred'</em>); // both alerts show</code></pre> <div class="mdetail-params">\r
- <strong>Parameters:</strong>\r
- <ul><li><code>fcn</code> : Function<div class="sub-desc">The function to sequence</div></li><li><code>scope</code> : Object<div class="sub-desc">(optional) The scope of the passed fcn (Defaults to scope of original function or window)</div></li> </ul>\r
- <strong>Returns:</strong>\r
- <ul>\r
- <li><code>Function</code><div class="sub-desc">The new function</div></li>\r
- </ul>\r
- </div>\r
- </div>\r
- </div>\r
- </td>\r
- <td class="msource">Function</td>\r
- </tr>\r
- <tr class="method-row expandable">\r
- <td class="micon"><a class="exi" href="#expand"> </a></td>\r
- <td class="sig">\r
- <a id="Function-defer"></a>\r
- <b>defer</b>( <code>Number millis</code>, <span class="optional" title="Optional">[<code>Object obj</code>]</span>, <span class="optional" title="Optional">[<code>Array args</code>]</span>, <span class="optional" title="Optional">[<code>Boolean/Number appendArgs</code>]</span> ) : Number <div class="mdesc">\r
- <div class="short">Calls this function after the number of millseconds specified, optionally in a specific scope. Example usage:
-var say...</div>\r
- <div class="long">\r
- Calls this function after the number of millseconds specified, optionally in a specific scope. Example usage:
-<pre><code>var sayHi = <b>function</b>(name){
+sayGoodbye(<em>'Fred'</em>); <i>// both alerts show</i></code></pre><div class="mdetail-params"><strong>Parameters:</strong><ul><li><code>fcn</code> : Function<div class="sub-desc">The function to sequence</div></li><li><code>scope</code> : Object<div class="sub-desc">(optional) The scope (<code><b>this</b></code> reference) in which the passed function is executed.
+<b>If omitted, defaults to the scope in which the original function is called or the browser window.</b></div></li></ul><strong>Returns:</strong><ul><li><code>Function</code><div class="sub-desc">The new function</div></li></ul></div></div></div></td><td class="msource">Function</td></tr><tr class="method-row expandable "><td class="micon"><a href="#expand" class="exi"> </a></td><td class="sig"><a id="Function-defer"></a><b><a href="source/Ext.html#method-Function-defer">defer</a></b>( <code>Number millis</code>, <span title="Optional" class="optional">[<code>Object scope</code>]</span>, <span title="Optional" class="optional">[<code>Array args</code>]</span>, <span title="Optional" class="optional">[<code>Boolean/Number appendArgs</code>]</span> )
+ :
+ Number<div class="mdesc"><div class="short">Calls this function after the number of millseconds specified, optionally in a specific scope. Example usage:
+var say...</div><div class="long">Calls this function after the number of millseconds specified, optionally in a specific scope. Example usage:
+<pre><code><b>var</b> sayHi = <b>function</b>(name){
alert(<em>'Hi, '</em> + name);
}
sayHi(<em>'Fred'</em>);
<i>// executes after 2 seconds:</i>
-sayHi.defer(2000, <b>this</b>, [<em>'Fred'</em>]);
+sayHi.defer(2000, this, [<em>'Fred'</em>]);
-<i>// <b>this</b> syntax is sometimes useful <b>for</b> deferring</i>
+<i>// this syntax is sometimes useful <b>for</b> deferring</i>
<i>// execution of an anonymous <b>function</b>:</i>
(<b>function</b>(){
alert(<em>'Anonymous'</em>);
-}).defer(100);</code></pre> <div class="mdetail-params">\r
- <strong>Parameters:</strong>\r
- <ul><li><code>millis</code> : Number<div class="sub-desc">The number of milliseconds for the setTimeout call (if 0 the function is executed immediately)</div></li><li><code>obj</code> : Object<div class="sub-desc">(optional) The object for which the scope is set</div></li><li><code>args</code> : Array<div class="sub-desc">(optional) Overrides arguments for the call. (Defaults to the arguments passed by the caller)</div></li><li><code>appendArgs</code> : Boolean/Number<div class="sub-desc">(optional) if True args are appended to call args instead of overriding,
-if a number the args are inserted at the specified position</div></li> </ul>\r
- <strong>Returns:</strong>\r
- <ul>\r
- <li><code>Number</code><div class="sub-desc">The timeout id that can be used with clearTimeout</div></li>\r
- </ul>\r
- </div>\r
- </div>\r
- </div>\r
- </td>\r
- <td class="msource">Function</td>\r
- </tr>\r
- </table>
- <a id="Function-events"></a>
- <h2>Public Events</h2>
- <div class="no-members">This class has no public events.</div>
- </div>
\ No newline at end of file
+}).defer(100);</code></pre><div class="mdetail-params"><strong>Parameters:</strong><ul><li><code>millis</code> : Number<div class="sub-desc">The number of milliseconds for the setTimeout call (if less than or equal to 0 the function is executed immediately)</div></li><li><code>scope</code> : Object<div class="sub-desc">(optional) The scope (<code><b>this</b></code> reference) in which the function is executed.
+<b>If omitted, defaults to the browser window.</b></div></li><li><code>args</code> : Array<div class="sub-desc">(optional) Overrides arguments for the call. (Defaults to the arguments passed by the caller)</div></li><li><code>appendArgs</code> : Boolean/Number<div class="sub-desc">(optional) if True args are appended to call args instead of overriding,
+if a number the args are inserted at the specified position</div></li></ul><strong>Returns:</strong><ul><li><code>Number</code><div class="sub-desc">The timeout id that can be used with clearTimeout</div></li></ul></div></div></div></td><td class="msource">Function</td></tr></tbody></table><a id="Function-events"></a><h2>Public Events</h2><div class="no-members">This class has no public events.</div></div>
\ No newline at end of file
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