DOM - 15Style属性练习 - 《爆炸就是java》

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
        "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
    <title>15Style属性练习</title>
    <script type="text/javascript">
        //页面打开以后就加载
        window.onload = function () {
           var box1 = document.getElementById("box1");
           //设置div的宽高
            box1.style.height = "50px";
            box1.style.width = "50px";
           //把div背景色设置成蓝色
            box1.style.backgroundColor = "blue";
            //div往下偏移 100px
            box1.style.marginTop =  "100px";
        };
    </script>
</head>
<body>
    <div id = "box1">
    </div>
</body>
</html>