history state on navigation actions. You can then handle the history <a href="output/Ext.History.html#Ext.History-change" ext:member="change" ext:cls="Ext.History">change</a> event in order
to reset your application UI to the appropriate state when the user navigates forward or backward through
the browser history stack.<br><br><i>This class is a singleton and cannot be created directly.</i></div><div class="hr"></div><a id="Ext.History-configs"></a><h2>Config Options</h2><table cellspacing="0" class="member-table"><tbody><tr><th colspan="2" class="sig-header">Config Options</th><th class="msource-header">Defined By</th></tr><tr class="config-row expandable inherited"><td class="micon"><a href="#expand" class="exi"> </a></td><td class="sig"><a id="Ext.util.Observable-listeners"></a><b><a href="source/Observable.html#cfg-Ext.util.Observable-listeners">listeners</a></b> : Object<div class="mdesc"><div class="short">A config object containing one or more event handlers to be added to this
history state on navigation actions. You can then handle the history <a href="output/Ext.History.html#Ext.History-change" ext:member="change" ext:cls="Ext.History">change</a> event in order
to reset your application UI to the appropriate state when the user navigates forward or backward through
the browser history stack.<br><br><i>This class is a singleton and cannot be created directly.</i></div><div class="hr"></div><a id="Ext.History-configs"></a><h2>Config Options</h2><table cellspacing="0" class="member-table"><tbody><tr><th colspan="2" class="sig-header">Config Options</th><th class="msource-header">Defined By</th></tr><tr class="config-row expandable inherited"><td class="micon"><a href="#expand" class="exi"> </a></td><td class="sig"><a id="Ext.util.Observable-listeners"></a><b><a href="source/Observable.html#cfg-Ext.util.Observable-listeners">listeners</a></b> : Object<div class="mdesc"><div class="short">A config object containing one or more event handlers to be added to this