JavaScript Reference/Javascript Properties/rowIndex

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"rowIndex" Example

<html>
<body>    
<script language="JavaScript">
    function function1(elem) {
        var m = elem.rowIndex; 
        alert("Row Index: "+m);
    }
</script>
<table width="100" border="3" cellspacing="2" cellpadding="2">
   <tr id="tr1" onclick="function1(this);">
       <td>Row 1</td>
   </tr>
   <tr id="tr2" onclick="function1(this);"> 
       <td>Row 2</td>
   </tr>
   <tr id="tr3" onclick="function1(this);"> 
       <td>Row 3</td>
   </tr>
   <tr id="tr4" onclick="function1(this);"> 
       <td>Row 4</td>
   </tr>
</table>
</body>
</html>



"rowIndex" is applied to

+----------------+--------------------------------------------------------------+
| Applied_To     |<tr>                                                          |
+----------------+--------------------------------------------------------------+



"rowIndex" Syntax and Note

Note:
Read-only property. 
Returns the row number in the table.
    
Syntax:
    
document.getElementById("trID").rowIndex
document.all.trID.rowIndex // IE only
Источник — «http://wbex.ru/index.php?title=JavaScript_Reference/Javascript_Properties/rowIndex&oldid=7193»