主要代码：

  function AttachEvent(obj, eventName, handler, argsObject) {

            var eventHandler = handler;             if (argsObject) {                 eventHandler =                function (e) {                    handler.call(this, argsObject);                }             }             if (window.attachEvent)//IE                 obj.attachEvent("on" + eventName, eventHandler);             else//FF                 obj.addEventListener(eventName, eventHandler, false);         }

用监听器绑定具体的方法与对应的处理函数。 

当然也可以直接用JQuery的绑定。

实例：

<script type="text/javascript">

        var SWord;         var IDS;         function onReady() {             IDS = {                 txtAlarmID: '<%= txtAlarmID.ClientID %>',                 txtLogicType: '<%= txtLogicType.ClientID %>',                 ddlDeviceType: '<%= ddlDeviceType.ClientID %>',                 textSolution: '<%= textSolution.ClientID %>',                 txtLogicType: '<%= txtLogicType.ClientID %>'             };             SWord =             {                 text: '',                 Start: 0,                 End: 0             };             var textareaSo = document.getElementById(IDS.textSolution);             AttachEvent(textareaSo, "click", clickSelectedText, IDS.textSolution);             var textLogicType = document.getElementById(IDS.txtLogicType);             AttachEvent(textLogicType, "click", clickSelectedText, IDS.txtLogicType);         };         function AttachEvent(obj, eventName, handler, argsObject) {             var eventHandler = handler;             if (argsObject) {                 eventHandler =                function (e) {                    handler.call(this, argsObject);                }             }             if (window.attachEvent)//IE                 obj.attachEvent("on" + eventName, eventHandler);             else//FF                 obj.addEventListener(eventName, eventHandler, false);         }         function clickSelectedText(Id) {             var o = document.getElementById(Id);             if (document.selection) {                 var k = document.selection.createRange().text;                 if (k.lenght > 0)                 {                                  }             } else {                 var p1 = o.selectionStart; var p2 = o.selectionEnd;                 if (p1 || p1 == '0') {                     if (p1 != p2) {//选中                         SWord.Start = p1;                         SWord.End = p2;                         SWord.word = o.value.substring(p1, p2);                     }                     else //点击                     {                         if (p1 > SWord.Start && p2 < SWord.End) {                             document.getElementById("Div1").innerHTML = SWord.word;                         }                         SWord.Start = 0;                         SWord.End = 0;                         SWord.word = '';                     }                 }             }         }       

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