jQuery实现的复选框全选/取消全选/反选及获得选择的值。

完整代码：

<!DOCTYPE html> 

<html> 
<head> 
<script type="text/javascript" src="../js/jquery-1.9.1.js"></script> 
<script type="text/javascript"> 
$(document).ready(function() { 
// 全选/取消全部 
$("#checkAllChange").click(function() { 
if (this.checked == true) { 
$(".userid").each(function() { 
this.checked = true; 
}); 
} else { 
$(".userid").each(function() { 
this.checked = false; 
}); 
} // www.jbxue.com
}); 
// 全选 
$("#checkAll").click(function() { 
$(".userid").each(function() { 
this.checked = true; 
}); 
}); 
// 取消全部 
$("#removeAll").click(function() { 
$(".userid").each(function() { 
this.checked = false; 
}); 
}); 
// 反选 
$("#reverse").click(function() { 
$(".userid").each(function() { 
if (this.checked == true) { 
this.checked = false; 
} else { 
this.checked = true; 
} 
}) 
}); 
//批量删除 
$("#delAll").click(function() { 
var arrUserid = new Array(); 
$(".userid").each(function(i) { 
if (this.checked == true) { 
arrUserid[i] = $(this).val(); 
} 
}); 
alert("批量删除的:" + arrUserid); 
}); 
}); 
</script> 
</head>

<body> 
<table border="1"> 
<tr> 
<td><input type="checkbox" id="checkAllChange" /></td> 
<td>用户id</td> 
<td>用户名</td> 
<td>电话</td> 
<td>地址</td> 
</tr> 
<tr> 
<td><input type="checkbox" class="userid" value="1" /></td> 
<td>1</td> 
<td>wangzs1</td> 
<td>18888000</td> 
<td>浦东</td> 
</tr> 
<tr> 
<td><input type="checkbox" class="userid" value="2" /></td> 
<td>2</td> 
<td>wangzs2</td> 
<td>18888001</td> 
<td>上海</td> 
</tr> 
<tr> 
<td><input type="checkbox" class="userid" value="3" /></td> 
<td>3</td> 
<td>wangzs3</td> 
<td>18888002</td> 
<td>河南</td> 
</tr> 
<tr> 
<td><input type="checkbox" class="userid" value="4" /></td> 
<td>4</td> 
<td>wangzs4</td> 
<td>18888003</td> 
<td>许昌</td> 
</tr> 
<tr> 
<td></td> 
<td><input type="button" id="checkAll" value="全选" /></td> 
<td><input type="button" id="removeAll" value="取消全部" /></td> 
<td><input type="button" id="reverse" value="反选" /></td> 
</tr> 
<tr> 
<td colspan="4" align="center"><input type="button" value="批量删除" id="delAll"></td> 
</tr> 
</table> 
</body>
</html>