如何让文本框自动全选
<head>
<title>标题页</title>
<script language="javascript">
function selectAll()
{
mytxt.select();
}
</script>
</head>
<body>
<textarea id="mytxt" cols=30 rows=6 >
</textarea>
<input id="mybtn" value="全选" type="button" onClick="selectAll()" />
</body>
</html>
返回
