Day6--------runCodeOfUser

//----------------使用了window.open和document.write在新页面中打开用户提交的代码<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>codeWindow</title>
</head>
<script type="text/javascript">
    window.onload=function(){
        oText=document.getElementsByTagName(‘textarea‘)[0];
        oBtn=document.getElementsByTagName(‘input‘)[0];
        oBtn.onclick=function(){
            add=window.open(‘about:blank‘,‘_blank‘);
            add.document.write(oText.value);
        }
    }
</script>
<body>
    <textarea cols="100" rows="30"></textarea>
    <input type="button" value="runCode" />
</body>
</html>