一个关于继承实例中监听器不起作用出现的错误，求解答
以下是我学习过程中出现的错误，哪位大神能帮忙下呢，小弟非常感谢啊！代码如下：
/* * 就地编辑器实例 */function EditInPlaceField(id,parent,value){ this.id = id; this.value = value || 'default value'; this.parentElement = parent; this.createElements(this.id); this.attachEvents();}EditInPlaceField.prototype = { createElements : function(id){ this.containerElement = document.createElement("div"); this.parentElement.appendChild(this.containerElement); this.staticElement = document.createElement("span"); this.containerElement.appendChild(this.staticElement); this.staticElement.innerHTML = this.value; this.fieldElemtnt = document.createElement("input"); this.fieldElemtnt.type = "text"; this.fieldElemtnt.value = this.value; this.containerElement.appendChild(this.fieldElemtnt); this.saveButton = document.createElement("input"); this.saveButton.type = "button"; this.saveButton.value = "Save"; this.containerElement.appendChild(this.saveButton); this.cancelButton = document.createElement("input"); this.cancelButton.type = "button"; this.cancelButton.value = "Cancel"; this.containerElement.appendChild(this.cancelButton); this.convertToText(); }, attachEvents : function(){ var that = this; //运行到这里监听事件不起作用了 addEventListener(this.staticElement,"click",function(){ that.convertToEditable(); }); addEventListener(this.saveButton,"click",function(){ that.save(); }); addEventListener(this.cancelButton,"click",function(){ that.cancel(); }); }, convertToEditable : function(){ this.staticElement.style.display = "none"; this.fieldElemtnt.style.display = "inline"; this.saveButton.style.display = "inline"; this.cancelButton.style.display = "inline"; this.setValue(this.value); }, save : function(){ this.value = this.getValue(); var that = this; var callback = { success : function(){ that.convertToText(); }, failure : function(){ alert("Error saving value."); } }; //ajaxRequest('Get',"url",callback); }, cancel : function(){ this.convertToText(); }, convertToText : function(){ this.staticElement.style.display = "inline"; this.fieldElemtnt.style.display = "block"; this.saveButton.style.display = "block"; this.cancelButton.style.display = "block"; this.setValue(this.value); }, setValue : function(value){ this.fieldElemtnt.value = value; this.staticElement.innerHTML = value; }, getValue : function(){ return this.fieldElemtnt.value; }}$(function(){ var titleClassical = new EditInPlaceField("titleClassical",$("#doc").get(0),"Title Here"); var currentTitleText = titleClassical.getValue();})<body> <div id="doc"></div></body>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
<script type="text/javascript" src="scripts/jquery-1.4.4.min.js"></script>
<script type="text/javascript">
function EditInPlaceField(id,parent,value){
this.id = id;
this.value = value || 'default value';
this.parentElement = parent;
//this.createElements(this.id);
//this.attachEvents();
}
EditInPlaceField.prototype = {
createElements : function(){
this.containerElement = document.createElement("div");
this.parentElement.appendChild(this.containerElement);
this.staticElement = document.createElement("span");
this.containerElement.appendChild(this.staticElement);
this.staticElement.innerHTML = this.value;
this.fieldElemtnt = document.createElement("input");
this.fieldElemtnt.type = "text";
this.fieldElemtnt.value = this.value;
this.containerElement.appendChild(this.fieldElemtnt);
this.saveButton = document.createElement("input");
this.saveButton.type = "button";
this.saveButton.value = "Save";
this.containerElement.appendChild(this.saveButton);
this.cancelButton = document.createElement("input");
this.cancelButton.type = "button";
this.cancelButton.value = "Cancel";
this.containerElement.appendChild(this.cancelButton);
this.convertToText();
},
attachEvents : function(){
var that = this;
//运行到这里监听事件不起作用了
addEventListener(this.staticElement,"click",function(){
that.convertToEditable();
});
addEventListener(this.saveButton,"click",function(){
that.save();
});
addEventListener(this.cancelButton,"click",function(){
that.cancel();
});
},
convertToEditable : function(){
this.staticElement.style.display = "none";
this.fieldElemtnt.style.display = "inline";
this.saveButton.style.display = "inline";
this.cancelButton.style.display = "inline";
this.setValue(this.value);
},
save : function(){
this.value = this.getValue();
var that = this;
var callback = {
success : function(){
that.convertToText();
},
failure : function(){
alert("Error saving value.");
}
};
//ajaxRequest('Get',"url",callback);
},
cancel : function(){
this.convertToText();
},
convertToText : function(){
this.staticElement.style.display = "inline";
this.fieldElemtnt.style.display = "block";
this.saveButton.style.display = "block";
this.cancelButton.style.display = "block";
this.setValue(this.value);
},
setValue : function(value){
this.fieldElemtnt.value = value;
this.staticElement.innerHTML = value;
},
getValue : function(){
return this.fieldElemtnt.value;
}
}
$(function(){
var titleClassical = new EditInPlaceField("titleClassical",$("#doc").get(0),"Title Here");
titleClassical.createElements();
var currentTitleText = titleClassical.getValue();
})
</script>
</head>
<body>
<body>
<div id="doc"></div>
</body>
</body>
</html>
[解决办法]
多了个<body></body>
去掉试试
[解决办法]
attachEvents: function () { function addEventListener(el, evt, handler) {//添加事件 if (el.addEventListener) el.addEventListener(evt, handler, false); else el.attachEvent('on' + evt, handler); } var that = this; //IE要attachEvent，并且这样绑定是个window添加事件了 addEventListener(this.staticElement, "click", function () { that.convertToEditable(); }); addEventListener(this.saveButton, "click", function () { that.save(); }); addEventListener(this.cancelButton, "click", function () { that.cancel(); }); }