<script type=”text/javascript”>
$(function () {
$(“#checkAll”).click(function () {//点击全选
var allLength = $(“:checkbox[id!=’checkAll’]”).length; //复选框的个数
var checkLength = $(“:checkbox[id!=’checkAll’]:checked”).length; //复选框被选中的个数
if (allLength == checkLength) { //处于全选状态
$(“:checkbox[id!=’checkAll’]”).each(function () {//所有选框依次取消
$(“:checkbox[id!=’checkAll’]”).attr(“checked”, false);
})
}
else {//不处于全选状态
$(“:checkbox[id!=’checkAll’]”).each(function () {//所有选框依次选中
$(this).attr(“checked”, $(“#checkAll”).attr(“checked”));
})
}
})
$(“:checkbox[id!=’checkAll’]”).click(function () {//点击一个普通复选框
var allLength = $(“:checkbox[id!=’checkAll’]”).length; //复选框的个数
var checkLength = $(“:checkbox[id!=’checkAll’]:checked”).length; //复选框被选中的个数
if (allLength == checkLength) { //处于全选状态
$(“#checkAll”).attr(“checked”, true);//全选按钮选中
}
else {
$(“#checkAll”).attr(“checked”, false);//全选按钮的非选中状态
}
})
})
</script>
全选<input id=”checkAll” name=”checkAll” type=”checkbox” />
<table>
<tr> <td>
<input id=”Checkbox0″ name=”CheckIt” type=”checkbox” />
</td>
<td>选项一</td>
</tr>
<tr> <td>
<input id=”Checkbox1″ name=”CheckIt” type=”checkbox” />
</td>
<td>选项二</td>
</tr>
<tr> <td>
<input id=”Checkbox2″ name=”CheckIt” type=”checkbox” />
</td>
<td>选项三</td>
</tr>
<tr> <td>
<input id=”Checkbox3″ name=”CheckIt” type=”checkbox” />
</td>
<td>选项四</td>
</tr>
</table>
