JavaScript 就地编辑HTML节点实现代码_javascript技巧

<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <title>点击编辑当前内容</title> <script type="text/javascript"> var EditField={ configure:function(id){ this.id=id; this.createElements(); //动态生成编辑输入框 this.toScan(); //初始化动态生成的输入框和按钮、待编辑的DOM元素的display属性 this.addEvents(); //给相关的DOM元素添加事件监听器 }, events:function(elem,type,fn){ //用于添加事件的通用函数 if(elem.attachEvent){ elem.attachEvent("on"+type,fn); }else if(elem.addEventListener){ elem.addEventListener(type,fn,false); }else{ elem["on"+type]=fn; } return elem; }, addEvents:function(){ //添加事件 var that=this; this.events(this.btnSubmit,"click",function(){ that.save(); }); this.events(this.btnCancel,"click",function(){ that.cancel(); }); this.events(document.getElementById(this.id),"click",function(){ that.toEdit(); }); }, insertAfter:function(newNode,referenceNode){ //将动态生成的输入框和按钮插入到待编辑元素的后面 if (referenceNode.nextSibling) { referenceNode.parentNode.insertBefore(newNode, referenceNode.nextSibling); }else{ var p=referenceNode.parentNode || document.body; p.appendChild(newNode); } }, createElements:function(){ //动态生成输入框和按钮 this.divContainer=document.createElement("div"); //this.parentElement.appendChild(this.divContainer); this.insertAfter(this.divContainer,document.getElementById(this.id)); this.input=document.createElement("input"); this.input.type="text"; this.input.value=document.getElementById(this.id).innerHTML; //初始化值 this.divContainer.appendChild(this.input); this.btnSubmit=document.createElement("input"); this.btnSubmit.value="Submit"; this.btnSubmit.type="button"; this.divContainer.appendChild(this.btnSubmit); this.btnCancel=document.createElement("input"); this.btnCancel.type="button"; this.btnCancel.value="Cancel"; this.divContainer.appendChild(this.btnCancel); }, toEdit:function(){ //转换成编辑状态 this.divContainer.style.display="block"; document.getElementById(this.id).style.display="none"; this.setValue(); }, toScan:function(){ //转换成浏览状态 document.getElementById(this.id).style.display="block"; this.divContainer.style.display="none"; }, getValue:function(){ //获取输入框的值 return this.input.value; }, setValue:function(){ //设置输入框的值 this.input.value=document.getElementById(this.id).innerHTML; }, save:function(){ //保存编辑结果 document.getElementById(this.id).innerHTML=this.getValue(); this.toScan(); }, cancel:function(){ //取消当前的编辑 this.toScan(); } }; onload=function(){ EditField.configure("p"); //调用configure函数，确定那个DOM元素进行就地编辑 } </script> <h3>Edit Demo</h3> <p id="p">脚本之家 www.jb51.net</p> <p>Copyright:Super sha.</p>
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