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");  

        }  

    }