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<title>Document</title>
<script type="text/javascript">
window.onload = function (){
var oP = document.getElementsByTagName("p")[0];
var aInput = document.getElementsByTagName("input");
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var str = oP.innerHTML;
var content = ‘‘;
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content += ‘<span>‘ + str.charAt(i) + ‘</span>‘;
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var arr = [];
var num = -1;
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function change(index){
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<p>sagdhrthyrutyjjsasaHHsdgsg</p>
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原文地址：http://www.cnblogs.com/mayufo/p/4440441.html
