DOM 编程艺术 实用代码段

addLoadEvent


function addLoadEvent(func){
var oldonload = window.onload;
if(typeof window.onload!='function')
{
window.onload = func;
}
else
{
window.onload=function(){
oldonload();
func()}
}
}


insertAfter


function insertAfter(newElement,targetElement){
var parent = targetElement.parentNode;
if(parent.lastChild==targetElement)
parent.appendChild(newElement);
else
parent.insertBefore(newElement,targetElement.nextSibling);
}


getNextElement


function getNextElement(node){
var nextnode=node.nextSibling;
if(nextnode.nodeType==1)
return nextnode;
if(nextnode.nextSibling)
return getNextElement(nextnode.Sibling);
}


addClass


function addClass(element,value){
if(!element.className){
element.className=value;
}
else{
newClassName=element.className;
newClassName+="";
newClassName+=value;
element.className=newClassName;
}
}