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<html>3
<head>4
<meta charset="utf-8">5
<title>蜜蜂教程(mifengjc.com)</title>6
<style>7
#myDIV {8
border: 1px solid black;9
width: 300px;10
height: 300px;11
background: url("/examples/smiley.gif") no-repeat;12
}13
</style>14
</head>15
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<body>17
<p>点击“尝试一下”按钮扩大 DIV 元素的背景大小：</p>18
<button onclick="myFunction()">尝试一下</button>19
<div id="myDIV">20
<h1>Hello</h1>21
</div>22
<script>23
function myFunction() {24
document.getElementById("myDIV").style.backgroundSize = "60px 120px";25
}26
</script>27
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</body>29
</html>