在IECN看到心云写的关于互换select的JS，因里面用到removeNode和swapNode等方法，导致在Firefox下无效。刚刚Google了下，发现可以通过自定义原型来修正只在IE下有效的属性与方法。 原文参考：http://www.phpx.com/happy/top97619.html 修改方案如下： <script language="javascript" type="text/javascript"> <!-- if(window.Event){// 修正Event的DOM /* IE5 MacIE5 Mozilla Konqueror2.2 Opera5 event yes yes yes yes yes event.returnValue yes yes no no no event.cancelBubble yes yes no no no event.srcElement yes yes no no no event.fromElement yes yes no no no */ Event.prototype.__defineSetter__("returnValue",function(b){// if(!b)this.preventDefault(); return b; }); Event.prototype.__defineSetter__("cancelBubble",function(b){// 设置或者检索当前事件句柄的层次冒泡 if(b)this.stopPropagation(); return b; }); Event.prototype.__defineGetter__("srcElement",function(){ var node=this.target; while(node.nodeType!=1)node=node.parentNode; return node; }); Event.prototype.__defineGetter__("fromElement",function(){// 返回鼠标移出的源节点 var node; if(this.type=="mouseover") node=this.relatedTarget; else if(this.type=="mouseout") node=this.target; if(!node)return; while(node.nodeType!=1)node=node.parentNode; return node; }); Event.prototype.__defineGetter__("toElement",function(){// 返回鼠标移入的源节点 var node; if(this.type=="mouseout") node=this.relatedTarget; else if(this.type=="mouseover") node=this.target; if(!node)return; while(node.nodeType!=1)node=node.parentNode; return node; }); Event.prototype.__defineGetter__("offsetX",function(){ return this.layerX; }); Event.prototype.__defineGetter__("offsetY",function(){ return this.layerY; }); } if(window.Document){// 修正Document的DOM /* IE5 MacIE5 Mozilla Konqueror2.2 Opera5 document.documentElement yes yes yes yes no document.activeElement yes null no no no */ } if(window.Node){// 修正Node的DOM /* IE5 MacIE5 Mozilla Konqueror2.2 Opera5 Node.contains yes yes no no yes Node.replaceNode yes no no no no Node.removeNode yes no no no no Node.children yes yes no no no Node.hasChildNodes yes yes yes yes no Node.childNodes yes yes yes yes no Node.swapNode yes no no no no Node.currentStyle yes yes no no no */ Node.prototype.replaceNode=function(Node){// 替换指定节点 this.parentNode.replaceChild(Node,this); } Node.prototype.removeNode=function(removeChildren){// 删除指定节点 if(removeChildren) return this.parentNode.removeChild(this); else{ var range=document.createRange(); range.selectNodeContents(this); return this.parentNode.replaceChild(range.extractContents(),this); } } Node.prototype.swapNode=function(Node){// 交换节点 var nextSibling=this.nextSibling; var parentNode=this.parentNode; node.parentNode.replaceChild(this,Node); parentNode.insertBefore(node,nextSibling); } } if(window.HTMLElement){ HTMLElement.prototype.__defineGetter__("all",function(){ var a=this.getElementsByTagName("*"); var node=this; a.tags=function(sTagName){ return node.getElementsByTagName(sTagName); } return a; }); HTMLElement.prototype.__defineGetter__("parentElement",function(){ if(this.parentNode==this.ownerDocument)return null; return this.parentNode; }); HTMLElement.prototype.__defineGetter__("children",function(){ var tmp=[]; var j=0; var n; for(var i=0;i<this.childNodes.length;i++){ n=this.childNodes[i]; if(n.nodeType==1){ tmp[j++]=n; if(n.name){ if(!tmp[n.name]) tmp[n.name]=[]; tmp[n.name][tmp[n.name].length]=n; } if(n.id) tmp[n.id]=n; } } return tmp; }); HTMLElement.prototype.__defineGetter__("currentStyle", function(){ return this.ownerDocument.defaultView.getComputedStyle(this,null); }); HTMLElement.prototype.__defineSetter__("outerHTML",function(sHTML){ var r=this.ownerDocument.createRange(); r.setStartBefore(this); var df=r.createContextualFragment(sHTML); this.parentNode.replaceChild(df,this); return sHTML; }); HTMLElement.prototype.__defineGetter__("outerHTML",function(){ var attr; var attrs=this.attributes; var str="<"+this.tagName; for(var i=0;i<attrs.length;i++){ attr=attrs[i]; if(attr.specified) str+=" "+attr.name+'="'+attr.value+'"'; } if(!this.canHaveChildren) return str+">"; return str+">"+this.innerHTML+"</"+this.tagName+">"; }); HTMLElement.prototype.__defineGetter__("canHaveChildren",function(){ switch(this.tagName.toLowerCase()){ case "area": case "base": case "basefont": case "col": case "frame": case "hr": case "img": case "br": case "input": case "isindex": case "link": case "meta": case "param": return false; } return true; }); HTMLElement.prototype.__defineSetter__("innerText",function(sText){ var parsedText=document.createTextNode(sText); this.innerHTML=parsedText; return parsedText; }); HTMLElement.prototype.__defineGetter__("innerText",function(){ var r=this.ownerDocument.createRange(); r.selectNodeContents(this); return r.toString(); }); HTMLElement.prototype.__defineSetter__("outerText",function(sText){ var parsedText=document.createTextNode(sText); this.outerHTML=parsedText; return parsedText; }); HTMLElement.prototype.__defineGetter__("outerText",function(){ var r=this.ownerDocument.createRange(); r.selectNodeContents(this); return r.toString(); }); HTMLElement.prototype.attachEvent=function(sType,fHandler){ var shortTypeName=sType.replace(/on/,""); fHandler._ieEmuEventHandler=function(e){ window.event=e; return fHandler(); } this.addEventListener(shortTypeName,fHandler._ieEmuEventHandler,false); } HTMLElement.prototype.detachEvent=function(sType,fHandler){ var shortTypeName=sType.replace(/on/,""); if(typeof(fHandler._ieEmuEventHandler)=="function") this.removeEventListener(shortTypeName,fHandler._ieEmuEventHandler,false); else this.removeEventListener(shortTypeName,fHandler,true); } HTMLElement.prototype.contains=function(Node){// 是否包含某节点 do if(Node==this)return true; while(Node=Node.parentNode); return false; } HTMLElement.prototype.insertAdjacentElement=function(where,parsedNode){ switch(where){ case "beforeBegin": this.parentNode.insertBefore(parsedNode,this); break; case "afterBegin": this.insertBefore(parsedNode,this.firstChild); break; case "beforeEnd": this.appendChild(parsedNode); break; case "afterEnd": if(this.nextSibling) this.parentNode.insertBefore(parsedNode,this.nextSibling); else this.parentNode.appendChild(parsedNode); break; } } HTMLElement.prototype.insertAdjacentHTML=function(where,htmlStr){ var r=this.ownerDocument.createRange(); r.setStartBefore(this); var parsedHTML=r.createContextualFragment(htmlStr); this.insertAdjacentElement(where,parsedHTML); } HTMLElement.prototype.insertAdjacentText=function(where,txtStr){ var parsedText=document.createTextNode(txtStr); this.insertAdjacentElement(where,parsedText); } HTMLElement.prototype.attachEvent=function(sType,fHandler){ var shortTypeName=sType.replace(/on/,""); fHandler._ieEmuEventHandler=function(e){ window.event=e; return fHandler(); } this.addEventListener(shortTypeName,fHandler._ieEmuEventHandler,false); } HTMLElement.prototype.detachEvent=function(sType,fHandler){ var shortTypeName=sType.replace(/on/,""); if(typeof(fHandler._ieEmuEventHandler)=="function") this.removeEventListener(shortTypeName,fHandler._ieEmuEventHandler,false); else this.removeEventListener(shortTypeName,fHandler,true); } } //--> </script>

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