JavaScript实现点击单元格改变背景色的方法

本文实例讲述了JavaScript实现点击单元格改变背景色的方法。分享给大家供大家参考，具体如下：

<html>

<body>

<table onclick="SetColor(event)" id="_t" width="500" border="0" cellspacing="0" cellpadding="0">

<tr>

<td width="93" height="29" background="hotlinkbg.gif" align="center">出租信息</td>

<td width="93" height="29" background="hotlinkbg.gif" align="center">求租信息</td>

<td width="314" height="29" background="hotlinkbg.gif" ></td>

</tr>

</table>

<table width="500">

<tr>

<td>aaaaa</td>

<td>bbbbb</td>

<td>ccccc</td>

<td>ddddd</td>

</tr>

</table>

<script tyle="text/javascript">

var oldClr = new Array()

function SetColor(e)

{

if (!e) e = window.event;

var obj

if(window.event)

obj = e.srcElement

else

obj = e.target

if(obj.tagName != "TD") return

var oldTD = obj

while( obj.tagName != "TR")

obj = obj.parentNode

var i

for(i = 0;i<obj.cells.length;i++)

{

if(obj.cells[i] == oldTD) break

}

var table = document.getElementById("_t")

for(j = 0;j<table.rows.length;j++)

{

//如果要删除其它列的颜色，请加上下面的3行

for(m = 0;m < table.rows[j].cells.length;m++)

{

table.rows[j].cells[m].background = oldClr[m]

}

//table.rows[j].cells[i].bgColor = table.rows[j].cells[i].background="button1_on.gif"

table.rows[j].cells[i].background = table.rows[j].cells[i].background==oldClr[i]?"button1_on.gif":oldClr[i]

}

}

window.onload = function()

{

var table = document.getElementById("_t")

for(j = 0;j<table.rows[0].cells.length;j++)

{

oldClr[j] = table.rows[0].cells[j].background

}

}

</script>

</body>

</html>

希望本文所述对大家JavaScript程序设计有所帮助。