运行,复制,保存,runCode,copyCode,saveCode,运行代码框

<script>
//对代码进行操作
function runCode(obj)
{
    var winname = window.open("", "_blank","resizable=yes,scrollbars=yes,status=yes");
    winname.document.open("text/html", "replace");
    winname.document.writeln(obj.value);
    winname.document.close();
}

function saveCode(obj,filename)
{
    var winname = window.open("", "", "top=10000,left=10000");
    winname.document.open("text/html", "replace");
    winname.document.writeln(obj.value);
    winname.document.execCommand("saveas", "", filename + ".htm");
    winname.close();
}

function copyCode(obj)
{
    var rng = document.body.createTextRange();
    rng.moveToElementText(obj);
    rng.scrollIntoView();
    rng.select();
    rng.execCommand("Copy");
    rng.collapse(false);
}
</script>

<textarea name=yongfa365 id=yongfa365></textarea>
<input type=button onclick=runCode(document.getElementById("yongfa365")) value="运行代码">
<input type=button onclick=copyCode(document.getElementById("yongfa365")) value="复制代码">
<input type=button onclick=saveCode(document.getElementById("yongfa365"),"运行,复制,保存,run,copy,save,代码") value="保存代码">