<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>用addOnload（）函数设置多重onload属性</title>
<script>
addOnload(initOne);
addOnload(initTwo);
addOnload(initThree);
function addOnload(newFunction){
var oldOnload=window.onload;
if(typeof oldOnload == "function") {
window.onload = function(){
if(oldOnload){
oldOnload();
}
newFunction();
}
}else{
window.onload = newFunction;
}
}
function initOne(){
document.getElementById('pagebody').style.backgroundColor = "#00F";
}
function initTwo(){
document.getElementById('pagebody').style.color = "#F00";
}
function initThree(){
var allTags = document.getElementsByTagName('*');
for(var i = 0;i < allTags.length;i++){
if(allTags[i].nodeName == 'H1'){
allTags[i].style.border = '5px green solid';
allTags[i].style.padding = "25px";
allTags['i'].style.backgroundColor = "#FFF";
}
}
}
</script>
</head>
<body id="pagebody">
<h1>Welcome to our school</h1>
</body>
</html>