<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title></title>
<style>
.div{
color:yellow;
padding:30px;
font-size:80px
}
</style>
</head>
<body>
<div id='div'></div>
</body>
</html>
<script src='itcast.js'></script>
<script>
// 不用框架的时候
// var div = document.getElementById('div')
// div.style.background='red'
// div.name='mydiv'
// div.className = 'div'
// div.innerHTML= '欢迎进入魔兽世界' var div = $$.$id('div')
$$.css('div','background','red')
$$.attr('div','name','mydiv')
$$.attr('div','className','div')
$$.html('div','欢迎进入魔兽世界')
</script>