<body><script language="JavaScript">function getCursorPos(event){ var obj= event.target||event.srcElement; if(document.selection){ if(obj.tagName!=undefined&&obj.tagName=='INPUT'){ var s=document.selection.createRange(); s.setEndPoint("StartToStart",obj.createTextRange()); var
pos=s.text.length; }else{ var rng = obj.createTextRange(); rng.moveToPoint(event.x,event.y); rng.moveStart("character",-obj.value.length); var pos=rng.text.length ; } }else{ var pos=obj.selectionStart; } document.getElementById('dbg').innerHTML="位置："+pos;}</script><form
name="form1" method="post"> <textarea name="username1" type="text" id="username1" onClick="getCursorPos(event)">1234567890</textarea> <inPut name="username" type="text" id="username" value="123456789" onClick="getCursorPos(event)"> </form><div id="dbg"></div></body>
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