批量删除

 1 function quanxuan()
 2 {
 3     //全选按钮的选中状态
 4     var zt = document.getElementById("qx").checked;
 5              
 6     //让下面所有的checkbox选中状态改变
 7     var ck = document.getElementsByClassName("ck");
 8              
 9     for(var i=0;i<ck.length;i++)
10     {
11         if(zt)
12         {
13             ck[i].setAttribute("checked","checked");   //添加属性是选中   
14         }  
15         else
16         {
17             ck[i].removeAttribute("checked");  //移除属性
18         }
19     }
20 }

$arr = $_POST["ck"];

require "../0428/DBDA.class.php";
$db = new DBDA();
$str = implode("‘,‘",$arr);//拼接字符

$sql = "delete from nation where code in(‘{$str}‘)";
echo $sql;
if($db->query($sql,0))
{
    header("location:main.php");

1 <input type="submit" value="删除" onclick="return sctishi()" onclick="return confirm(‘确定删除吗？‘) />

 1 function sctishi()
 2 {
 3     //找所有选中项
 4     var ck = document.getElementsByClassName("ck");
 5              
 6     var str = "";
 7              
 8     for(var i=0;i<ck.length;i++)    //弹出选中的value值
 9     {
10     　　if(ck[i].checked)
11        {
12         str += ck[i].value+",";  //每个复选框的值
13        }
14     }
15              
16     return confirm("确定要删除以下数据么："+str+"");   //删除弹框
17 }