当用户在table中单击时，如何知道单击的列号?代码如下?

Question

<table>
<tr onclick="GetIndexValue(this)">
<td>aaa</td>
</tr>
</table>function GetIndexValue(a){
    alert(a.rowIndex)   //行号
alert(a.childNodes[0].cellIndex) //列号
}
你的要的是列号，但你的函数在行里面，要注意下

Answer 1

<table>
<tr onclick="alert(this.rowIndex+'row')">
<td onclick="alert(this.cellIndex+'cell')">aaa</td>
<td onclick="alert(this.cellIndex+'cell')">aaa</td>
<td onclick="alert(this.cellIndex+'cell')">aaa</td>
</tr>
<tr onclick="alert(this.rowIndex+'row')">
<td onclick="alert(this.cellIndex+'cell')">bbb</td>
<td onclick="alert(this.cellIndex+'cell')">bbb</td>
<td onclick="alert(this.cellIndex+'cell')">bbb</td>
</tr>
<tr onclick="alert(this.rowIndex+'row')">
<td onclick="alert(this.cellIndex+'cell')">ccc</td>
<td onclick="alert(this.cellIndex+'cell')">ccc</td>
<td onclick="alert(this.cellIndex+'cell')">ccc</td>
</tr>
<tr onclick="alert(this.rowIndex+'row')">
<td onclick="alert(this.cellIndex+'cell')">ddd</td>
<td onclick="alert(this.cellIndex+'cell')">ddd</td>
<td onclick="alert(this.cellIndex+'cell')">ddd</td>
</tr>
<tr onclick="alert(this.rowIndex+'row')">
<td onclick="alert(this.cellIndex+'cell')">eee</td>
<td onclick="alert(this.cellIndex+'cell')">eee</td>
<td  onclick="alert(this.cellIndex+'cell')">eee</td>
</tr>
</table>