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<li> <code> scope </code> : Object <div class="sub-desc"> </div> </li> <li> <code> options </code> : Object <div class="sub-desc"> </div> </li> </ul> <b>返回:</b> <ul> <li> <code> void </code> </li> </ul> </div> </div> </div> </td> <td class="msource"> <!--如果这不是同个namespace下--><a ext:cls="Ext.util.Observable" ext:member="#method-addListener" href="output/Ext.util.Observable.html#method-addListener"> Observable </a> </td> </tr> <tr class="method-row expandable"> <td class="micon"> <a class="exi" href="#expand"> </a> </td> <td class="sig"> <!--ClassName--><a id="removeListener-removeListener"></a> <b>removeListener</b> ( <code> String eventName, </code> <code> Function handler, </code> <code> <span class='optional'>[Object scope]</span> </code> ) <div class="mdesc"> <div class="short"> 移除侦听器 </div> <div class="long"> 移除侦听器 <div class="mdetail-params"> <strong>参数项:</strong> <ul> <li> <code> eventName </code> : String <div class="sub-desc"> 侦听事件的类型 </div> </li> <li> <code> handler </code> : Function <div class="sub-desc"> 移除的处理函数 </div> </li> <li> <code> scope </code> : Object <div class="sub-desc"> </div> </li> </ul> <b>返回:</b> <ul> <li> <code> void </code> </li> </ul> </div> </div> </div> </td> <td class="msource"> <!--如果这不是同个namespace下--><a ext:cls="Ext.util.Observable" ext:member="#method-removeListener" href="output/Ext.util.Observable.html#method-removeListener"> Observable </a> </td> </tr> <tr class="method-row expandable"> <td class="micon"> <a class="exi" href="#expand"> </a> </td> <td class="sig"> <!--ClassName--><a id="purgeListeners-purgeListeners"></a> <b>purgeListeners</b> ( ) <div class="mdesc"> <div class="short"> 从这个对象身上移除所有的侦听器 </div> <div class="long"> 从这个对象身上移除所有的侦听器 <div class="mdetail-params"> <strong>参数项:</strong> <ul> </ul> <b>返回:</b> <ul> <li> <code> void </code> </li> </ul> </div> </div> </div> </td> <td class="msource"> <!--如果这不是同个namespace下--><a ext:cls="Ext.util.Observable" ext:member="#method-purgeListeners" href="output/Ext.util.Observable.html#method-purgeListeners"> Observable </a> </td> </tr> <tr class="method-row expandable"> <td class="micon"> <a class="exi" href="#expand"> </a> </td> <td class="sig"> <!--ClassName--><a id="addEvents-addEvents"></a> <b>addEvents</b> ( <code> Object object </code> ) <div class="mdesc"> <div class="short"> 定义观察者的事件。 </div> <div class="long"> 定义观察者的事件。 <div class="mdetail-params"> <strong>参数项:</strong> <ul> <li> <code> object </code> : Object <div class="sub-desc"> 定义的事件对象 </div> </li> </ul> <b>返回:</b> <ul> <li> <code> void </code> </li> </ul> </div> </div> </div> </td> <td class="msource"> <!--如果这不是同个namespace下--><a ext:cls="Ext.util.Observable" ext:member="#method-addEvents" href="output/Ext.util.Observable.html#method-addEvents"> Observable </a> </td> </tr> <tr class="method-row expandable"> <td class="micon"> <a class="exi" href="#expand"> </a> </td> <td class="sig"> <!--ClassName--><a id="hasListener-hasListener"></a> <b>hasListener</b> ( <code> String eventName </code> ) : Boolean <div class="mdesc"> <div class="short"> 查询该对象是否有指定事件的侦听器 </div> <div class="long"> 查询该对象是否有指定事件的侦听器 <div class="mdetail-params"> <strong>参数项:</strong> <ul> <li> <code> eventName
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