<!DOCTYPE html>
<html>
<head>
</head>
<body>
<div id="outer">
<input type="button" value="变宽"> <input type="button" value="变高"> <input type="button" value="变色"> <input type="button" value="隐藏"> <input type="button" value="重置"> <div id="inner"></div>
</div>
<p width="300px"></p>
<script>
var op=document.getElementsByTagName("p")[0];op.style.border="2px solid yellow";op.style.cssText="";
</script>
</body>
</html>
window.onload=function() {
模仿大神(http://fgm.cc/learn/lesson1/01.html)的代码做练习,结果我抄都没抄成功,请问是什么原因呢?
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