网页中运行代码功能–js代码

<SCRIPT>
function Preview(obj)
{
  var TestWin=open(”);
  TestWin.document.write(obj.value);
}
function copyCode(obj) {
    var rng = document.body.createTextRange();
    rng.moveToElementText(obj);
    rng.scrollIntoView();
    rng.select();
    rng.execCommand(“Copy”);
    rng.collapse(false);
}
function saveCode(obj) {
    var winname = window.open(”, ‘_blank’, ‘top=10000′);
    winname.document.open(‘text/html’, ‘replace’);
    winname.document.writeln(obj.value);
    winname.document.execCommand(‘saveas’,”,’web7d.com.cn.htm’);
    winname.close();
}
</SCRIPT>

<textarea id=”code2″ style=”width: 570px; height: 150px;” cols=”47″ rows=”15″>Web启点&lt;br /&gt; 致力于网站设计水平和能力的提高&lt;br /&gt; </textarea>
<button onclick=”Preview(code2)”>运行代码</button><button onclick=”copyCode(code2)”>复制代码</button><button onclick=”saveCode(code2)”>另存代码</button>