隐藏元素:Object.style.display=none
其他属性参考: http://www.w3school.com.cn/jsref/dom_obj_style.asp
火狐浏览器默认把可视区域的高度设为0,这样的话,$(window).height()就等于0了。在css的开头位置添加下面一行,即可兼容所有浏览器:html, body {width:100%height:100%}<!doctype html>
<html>
<head>
<meta charset="UTF-8">
<meta name="Generator" content="EditPlus®">
<meta name="Author" content="">
<meta name="Keywords" content="">
<meta name="Description" content="">
<title>Document</title>
</head>
<body>
<div id = "box"></div>
</body>
<script type="text/javascript">
var box = document.getElementById("box")
box.style.width='100px'
box.style.height='200px'
box.style.backgroundColor='red'
</script>
</html>