JS实现全选，用于界面批量操作向后台传值时使用

function seltAll(){

    var chckBoxSign = document.getElementById("ckb");       //ckb 全选/反选的选择框id

    var chckBox = document.getElementsByName("chckBox");    //所有的选择框其那么都是chckBox

    var num = chckBox.length;

    if(chckBoxSign.checked){

        for(var index =0 ; index<num ; index++){

            chckBox[index].checked = true;

            }

    }else{

        for(var index =0 ; index<num ; index++){

            chckBox[index].checked = false;

            }

        }

    }  

function deleSeltedRecords(){

    var chckBox = document.getElementsByName("chckBox");

    var num = chckBox.length;

    var ids = "";

    for(var index =0 ; index<num ; index++){

        if(chckBox[index].checked){

            ids += chckBox[index].value + ",";

        }

    }

    if(ids!=""){

        if(window.confirm("确定删除所选记录？")){

            $.ajax( {

                type : "post",

                url : '../servlet/UserController?oper=33&ids=' + ids, //要自行删除的action

                dataType : 'json',

                success : function(data) {

                    alert("删除成功");

                    window.location.href = "" ;

                },

                error : function(data) {

                    alert("系统错误，删除失败");

                }

            });

        }

    }else{

        alert("请选择要删除的记录");

        }

    }