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：
scriptlanguage="javascript"type="text/javascript"
!--
if(window.Event){//修正Event的DOM
/*
IE5MacIE5MozillaKonqueror2.2Opera5
eventyesyesyesyesyes
event.returnValueyesyesnonono
event.cancelBubbleyesyesnonono
event.srcElementyesyesnonono
event.fromElementyesyesnonono
*/
Event.prototype.__defineSetter__("returnValue",function(b){//
if(!b)this.preventDefault();
returnb;
});
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();
returnb;
});
Event.prototype.__defineGetter__("srcElement",function(){
varnode=this.target;
while(node.nodeType!=1)node=node.parentNode;
returnnode;
});
Event.prototype.__defineGetter__("fromElement",function(){//返回鼠标移出的源节点
varnode;
if(this.type=="mouseover")
node=this.relatedTarget;
elseif(this.type=="mouseout")
node=this.target;
if(!node)return;
while(node.nodeType!=1)node=node.parentNode;
returnnode;
});
Event.prototype.__defineGetter__("toElement",function(){//返回鼠标移入的源节点
varnode;
if(this.type=="mouseout")
node=this.relatedTarget;
elseif(this.type=="mouseover")
node=this.target;
if(!node)return;
while(node.nodeType!=1)node=node.parentNode;
returnnode;
});
Event.prototype.__defineGetter__("offsetX",function(){
returnthis.layerX;
});
Event.prototype.__defineGetter__("offsetY",function(){
returnthis.layerY;
});
}
if(window.Document){//修正Document的DOM
/*
IE5MacIE5MozillaKonqueror2.2Opera5
document.documentElementyesyesyesyesno
document.activeElementyesnullnonono
*/
}
if(window.Node){//修正Node的DOM
/*
IE5MacIE5MozillaKonqueror2.2Opera5
Node.containsyesyesnonoyes
Node.replaceNodeyesnononono
Node.removeNodeyesnononono
Node.childrenyesyesnonono
Node.hasChildNodesyesyesyesyesno
Node.childNodesyesyesyesyesno
Node.swapNodeyesnononono
Node.currentStyleyesyesnonono
*/
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)
returnthis.parentNode.removeChild(this);
else{
varrange=document.createRange();
range.selectNodeContents(this);
returnthis.parentNode.replaceChild(range.extractContents(),this);
}
}
Node.prototype.swapNode=function(Node){//交换节点
varnextSibling=this.nextSibling;
varparentNode=this.parentNode;
node.parentNode.replaceChild(this,Node);
parentNode.insertBefore(node,nextSibling);
}
}
if(window.HTMLElement){
HTMLElement.prototype.__defineGetter__("all",function(){
vara=this.getElementsByTagName("*");
varnode=this;
a.tags=function(sTagName){
returnnode.getElementsByTagName(sTagName);
}
returna;
});
HTMLElement.prototype.__defineGetter__("parentElement",function(){
if(this.parentNode==this.ownerDocument)returnnull;
returnthis.parentNode;
});
HTMLElement.prototype.__defineGetter__("children",function(){
vartmp=[];
varj=0;
varn;
for(vari=0;ithis.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;
}
}
returntmp;
});
HTMLElement.prototype.__defineGetter__("currentStyle",function(){
returnthis.ownerDocument.defaultView.getComputedStyle(this,null);
});
HTMLElement.prototype.__defineSetter__("outerHTML",function(sHTML){
varr=this.ownerDocument.createRange();
r.setStartBefore(this);
vardf=r.createContextualFragment(sHTML);
this.parentNode.replaceChild(df,this);
returnsHTML;
});
HTMLElement.prototype.__defineGetter__("outerHTML",function(){
varattr;
varattrs=this.attributes;
varstr=""+this.tagName;
for(vari=0;iattrs.length;i++){
attr=attrs[i];
if(attr.specified)
str+=""+attr.name+'="'+attr.value+'"';
}
if(!this.canHaveChildren)
returnstr+"";
returnstr+""+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":
returnfalse;
}
returntrue;
});
HTMLElement.prototype.__defineSetter__("innerText",function(sText){
varparsedText=document.createTextNode(sText);
this.innerHTML=parsedText;
returnparsedText;
});
HTMLElement.prototype.__defineGetter__("innerText",function(){
varr=this.ownerDocument.createRange();
r.selectNodeContents(this);
returnr.toString();
});
HTMLElement.prototype.__defineSetter__("outerText",function(sText){
varparsedText=document.createTextNode(sText);
this.outerHTML=parsedText;
returnparsedText;
});
HTMLElement.prototype.__defineGetter__("outerText",function(){
varr=this.ownerDocument.createRange();
r.selectNodeContents(this);
returnr.toString();
});
HTMLElement.prototype.attachEvent=function(sType,fHandler){
varshortTypeName=sType.replace(/on/,"");
fHandler._ieEmuEventHandler=function(e){
window.event=e;
returnfHandler();
}
this.addEventListener(shortTypeName,fHandler._ieEmuEventHandler,false);
}
HTMLElement.prototype.detachEvent=function(sType,fHandler){
varshortTypeName=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
doif(Node==this)returntrue;
while(Node=Node.parentNode);
returnfalse;
}
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){
varr=this.ownerDocument.createRange();
r.setStartBefore(this);
varparsedHTML=r.createContextualFragment(htmlStr);
this.insertAdjacentElement(where,parsedHTML);
}
HTMLElement.prototype.insertAdjacentText=function(where,txtStr){
varparsedText=document.createTextNode(txtStr);
this.insertAdjacentElement(where,parsedText);
}
HTMLElement.prototype.attachEvent=function(sType,fHandler){
varshortTypeName=sType.replace(/on/,"");
fHandler._ieEmuEventHandler=function(e){
window.event=e;
returnfHandler();
}
this.addEventListener(shortTypeName,fHandler._ieEmuEventHandler,false);
}
HTMLElement.prototype.detachEvent=function(sType,fHandler){
varshortTypeName=sType.replace(/on/,"");
if(typeof(fHandler._ieEmuEventHandler)=="function")
this.removeEventListener(shortTypeName,fHandler._ieEmuEventHandler,false);
else
this.removeEventListener(shortTypeName,fHandler,true);
}
}
//--
/script
