<textarea style=" 450; height: 300" id="theCode" title="双击运行代码" ondblclick="runCode('theCode');">
这里放入运行的Html代码。
</textarea>
<script type="text/javascript">
//执行代码
function runCode(obj) {
var winname = window.open('', "_blank", '');
var content = document.getElementById(obj).value;
winname.document.open('text/html', 'replace');
winname.opener = null
winname.document.writeln(content);
winname.document.close();
}
//复制代码
function doCopy(obj){
var codeObj = document.getElementById(obj);
clipboardData.setData('text', codeObj.innerText);
alert('已经复制代码');
}
// 另存为文件
function doSave(obj, filename){
var win = window.open('', '_blank', 'top=10000');
var code = document.getElementById(obj).innerText;
win.opener = null;
win.document.write(code);
win.document.execCommand('saveas', true, filename);
win.close();
}
</script>