<script language=javascript>
function r()
{
var fso = new ActiveXObject("Scripting.FileSystemObject");
var a = fso.CreateTextFile("c:\\testfile.txt", true);
a.Write(txt.value);
a.Close();
}
</script>
<textarea name="txt">我是一只小小小小小小鸟,想要飞却怎么样也飞不高...</textarea>
<input type=button value=保存 onclick=r()>