EasyUI datagrid實現翻頁保持選中狀態
轉載自:http://blog.csdn.net/junlong750/article/details/51470834
1、首先設定datagrid屬性的idField主鍵,這裡假如為id,若idField為其他的,記住下面的程式碼裡的 id也要做相應的修改
2、建立一個全域性的JavaScript陣列var checkedItems = [],用來存放選中checkbox的值。
3、核心方法,addcheckItem()、removeAllItem(rows)、removeSingleItem(rowIndex, rowData)當選中或者取消checkbox時觸發
用來將checkbox的主鍵值儲存在checkedItems陣列,或者從陣列中刪除對應的id值,findCheckedItem
是否存在checkbox的值,存在則返回id值,不存在則返回-1.
4、什麼時候呼叫這些方法呢?分別在datagrid的 onCheckAll: addcheckItem,onCheck: addcheckItem,onUncheckAll: removeAllItem,onUncheck: removeSingleItem 這四個事件中
呼叫對應的方法。
5、翻頁後如何給checkbox賦值呢?關鍵就在這裡,datagrid重寫了$.fn.datagrid.defaults.view的onAfterRender事件,
因此在datagrid的view事件裡繫結這個函式就OK了。onAfterRender事件是當easyui的元素渲染完畢後執行的事件,在這裡會呼叫手寫的ischeckItem函式來實現對checkbox的賦值!
6、程式碼展示
[html] view plain copy print?- <%@ page language="java"pageEncoding="UTF-8"contentType="text/html; charset=UTF-8"%>
- <%@ include file="/pageHead.jsp" %>
- <%@page import="com.iss.itreasury.common.utils.SysConstant"%>
- <scripttype="text/javascript">
-
document.onkeydown
- var e = e || event;
- if(e.keyCode == 13) {
- setTimeout(function(){
- $('#success').val("");
- },0);
- e.preventDefault ? e.preventDefault() : (e.returnValue = false);
- }
- }
- $(function(){
- $("#hid").hide();
- $("#allpeople").change(function () {
- var aaa = $("#allpeople option:selected").text();
- if(aaa == "所有人"){
- //$('#dg2').datagrid('clearSelections');
- $('#dg2').datagrid('reload');
- $("#hid").hide();
- }else{
- //$('#dg2').datagrid('clearSelections');
- $('#dg2').datagrid('reload');
- $("#hid").show();
- }
- });
- var fileview = $.extend({}, $.fn.datagrid.defaults.view, { onAfterRender: function (target) { ischeckItem(); } });
- var checkedItems = [];
- function ischeckItem() {
- for (var i = 0; i <checkedItems.length; i++) {
- $('#dg2').datagrid('selectRecord', checkedItems[i]); //根據id選中行
- }
- }
- function findCheckedItem(ID) {
- for (var i = 0; i <checkedItems.length; i++) {
- if (checkedItems[i] == ID) return i;
- }
- return -1;
- }
- function addcheckItem() {
- var row = $('#dg2').datagrid('getChecked');
- for (var i = 0; i <row.length; i++) {
- if (findCheckedItem(row[i].id) == -1) {
- checkedItems.push(row[i].id);
- }
- }
- }
- function removeAllItem(rows) {
- for (var i = 0; i <rows.length; i++) {
- var k = findCheckedItem(rows[i].id);
- if (k != -1) {
- checkedItems.splice(i, 1);
- }
- }
- }
- function removeSingleItem(rowIndex, rowData) {
- var k = findCheckedItem(rowData.id);
- if (k != -1) {
- checkedItems.splice(k, 1);
- }
- }
- $('#dg2').datagrid({
- idField: 'id',
- view: fileview,
- method: 'post',
- //title: '使用者列表',
- width: '1000',
- height: '325',
- fitColumns: true,
- singleSelect: true,
- pagination: true,
- url:'${systemctx}/userManager/userQuery.json',
- pageSize: 15,
- pageList: [ 20, 50, 100],
- queryParams: formToJson("pageform"),
- rownumbers:true,
- singleSelect:false,
- columns:[[
- {field:'id',title:' ',checkbox:true,align:'center'},
- {field:'username',title:'使用者名稱',width:'15%'},
- {field:'realname',title:'真實姓名',width:'15%'},
- {field:'roleName',title:'角色',width:'15%'},
- {field:'mobilePhone',title:'行動電話',width:'15%',align:'center'},
- {field:'email',title:'電子郵件',width:'20%'},
- {field:'sexName',title:'性別',width:'5%',align:'center'}
- ]],
- toolbar:[],
- onCheckAll:function(rows){
- addcheckItem();
- },
- onCheck:function(rowIndex,rowData){
- addcheckItem();
- },
- onUncheckAll:function(rows){
- removeAllItem(rows);
- },
- onUncheck:function(rowIndex,rowData){
- removeSingleItem(rowIndex,rowData);
- }
- });
- //將查詢項放入工具欄中
- //$('#tb').insertBefore("table:first",'.datagrid-toolbar');
- });
- function saveInstant(){
- }
- </script>
- <formid="pageform"class="easyui-form"method="POST"data-options="novalidate:true">
- <divclass="pageBody">
- <tableclass="tableFrom">
- <tr>
- <th>推送標題:</th>
- <td><inputid="title"class="iss_text"name="title"data-options="required:true"/></td>
- </tr>
- <tr>
- <th>推送內容:</th>
- <td><textarearows="8"cols="60"id="content"name="content"maxlength="150"></textarea></td>
- </tr>
- <tr>
- <th>廣播(所有人):</th>
- <td>
- <selectpanelheight="auto"name="allpeople"id="allpeople"