将光标定位到textarea的某一行的javascript代码_表单特效

    <br>  aaaaaaaaaaaaaa    <br><br>  cccccccccc    <br>  dddddddddddd    <br>  fffffffffffff    <br>     
     
     
  <script> <BR> function goL(Line) <BR> { <BR> ta1.focus(); <BR> var v=ta1.value.split('\n'); <BR> ch=0; <BR> for(var i=0;i<Line-1;i++) <BR> ch+=v[i].length; <BR> var o=ta1.createTextRange(); <BR> o.move("character",ch); <BR> o.select(); <BR> } <BR> </script>

<textarea name="ta1" rows="5" cols="50"> aaaaaaaaaaaaaa bbbbbbbbbbbbbb cccccccccc dddddddddddd fffffffffffff <input value="1" name="line"> <input type="button" onclick="goL(parseInt(line.value));" value="go"> <script> function goL(Line) { ta1.focus(); var v=ta1.value.split('\n'); ch=0; for(var i=0;i<Line-1;i++) ch+=v[i].length; var o=ta1.createTextRange(); o.move("character",ch); o.select(); } </script>
[Ctrl+A 全选 注:如需引入外部Js需刷新才能执行]