datatable怎样实现异步加载

2020-11-27 来源：客趣旅游网

这次给大家带来datatable怎样实现异步加载，datatable实现异步加载的注意事项有哪些，下面就是实战案例，一起来看一下。

table部分代码

<table class="table table-bordered table-striped" id="table-main">
 <thead>
 <tr>
 <th>用户名</th>
 <th>渠道名</th>
 <th>游戏名</th>
 <th>结果</th>
 <th>耗时</th>
 <th>创建时间</th>
 </tr>
 </thead>
</table>

异步加载数据并实现定制化

下面是简单例子, 其中 table-main 的初始化元素为table的id。

$('#select-game').select2(); // 初始化搜索下拉框
 
 // 表格汉化列表
 var table_lang = {
 "sProcessing": "处理中...",
 "sLengthMenu": "每页 _MENU_ 项",
 "sZeroRecords": "没有匹配结果",
 "sInfo": "当前显示第 _START_ 至 _END_ 项，共 _TOTAL_ 项。",
 "sInfoEmpty": "当前显示第 0 至 0 项，共 0 项",
 "sInfoFiltered": "(由 _MAX_ 项结果过滤)",
 "sInfoPostFix": "",
 "sSearch": "搜索:",
 "sUrl": "",
 "sEmptyTable": "表中数据为空",
 "sLoadingRecords": "载入中...",
 "sInfoThousands": ",",
 "oPaginate": {
 "sFirst": "首页",
 "sPrevious": "上页",
 "sNext": "下页",
 "sLast": "末页",
 "sJump": "跳转"
 },
 "oAria": {
 "sSortAscending": ": 以升序排列此列",
 "sSortDescending": ": 以降序排列此列"
 }
 };
 
 //初始化表格
 var table_main = $("#table-main").dataTable({
 language:table_lang, // 提示信息
 autoWidth: false, // 禁用自动调整列宽
 lengthMenu: [25, 50, 100],
 stripeClasses: ["odd", "even"], // 为奇偶行加上样式，兼容不支持CSS伪类的场合
 processing: false, // 隐藏加载提示,自行处理
 serverSide: true, // 启用服务器端分页
 searching: true, // 启用原生搜索
 orderMulti: true, // 启用多列排序
 order: [], // 取消默认排序查询,否则复选框一列会出现小箭头
 renderer: "bootstrap", // 渲染样式：Bootstrap和jquery-ui
 pagingType: "simple_numbers", //分页样式：simple,simple_numbers,full,full_numbers
 columnDefs: [{
 "targets": 'nosort', // 列的样式名
 "orderable": false // 包含上样式名‘nosort'的禁止排序
 }],
 ajax: function (data, callback, settings) {
 //封装请求参数
 var param = {};
 param.limit = data.length; // 页面显示记录条数，在页面显示每页显示多少项的时候
 param.start = data.start; // 开始的记录序号
 param.page = (data.start / data.length)+1; // 当前页码
 //ajax请求数据
 $.ajax({
 type: "GET",
 url: "getRecodeList",
 cache: true, // 开启缓存
 data: param, // 传入组装的参数
 dataType: "json",
 success: function (result) {
// console.log(result);
 //setTimeout仅为测试延迟效果
 setTimeout(function () {
 //封装返回数据
 var returnData = {};
 returnData.draw = data.draw; // 这里直接自行返回了draw计数器,应该由后台返回
 returnData.recordsTotal = result.total; // 返回数据全部记录
 returnData.recordsFiltered = result.total;// 后台不实现过滤功能，每次查询均视作全部结果
 returnData.data = result.data; // 返回的数据列表
 //console.log(returnData);
 // 调用DataTables提供的callback方法，代表数据已封装完成并传回DataTables进行渲染
 // 此时的数据需确保正确无误，异常判断应在执行此回调前自行处理完毕
 callback(returnData);
 cut_td($("#table-main"), 40); // 表格截断
 
 }, 200);
 }
 });
 },
 //列表表头字段
 columns: [
 { "data": "user_name" },
 { "data": "channel" },
 { "data": "game" },
 { "data": "status",
 "render": function(data){
 var status_name = '';
 switch(data)
 {
 case 0: status_name = '未完成'; break;
 case 1: status_name = '脚本错误'; break;
 case 2: status_name = '成功'; break;
 case 3: status_name = '测试通过'; break;
 default : status_name = '未知'; break;
 }
 return status_name;
 }},
 { "data": "cast_time",
 "render" : function(data){
 if (data)
 {
 return data + 's';
 }
 else
 {
 return '废弃';
 }
 }},
 { "data": "format_created_at" },
 ]
 }).api();

后台数据返回格式

{
 "total": 234,
 "per_page": "25",
 "current_page": 1,
 "last_page": 10,
 "next_page_url": "http://local.dgc_sdkops.com/monitor/log_pack/getRecodeList?page=2",
 "prev_page_url": null,
 "from": 1,
 "to": 25,
 "data": [
 {
 "id": 128,
 "user_id": 1,
 "task_id": "package_128_113",
 "channel_version_id": 128,
 "game_version_id": 113,
 "extend_id": 0,
 "type": "pack",
 "status": 2,
 "remark": "",
 "cast_time": 93475,
 "created_at": "1500365068",
 "updated_at": "1500458543",
 "user_name": "admin",
 "format_created_at": "2017-07-18 16:04:28",
 "format_updated_at": "2017-07-18 16:04:28",
 "game": "x",
 "channel": "y",
 "game_id": 11290,
 "channel_id": 67
 },
 {
 "id": 240,
 "user_id": 1,
 "task_id": "package_128_113",
 "channel_version_id": 128,
 "game_version_id": 113,
 "extend_id": 0,
 "type": "pack",
 "status": 0,
 "remark": "",
 "cast_time": 0,
 "created_at": "1500458454",
 "updated_at": "1500458454",
 "user_name": "admin",
 "format_created_at": "2017-07-19 18:00:54",
 "format_updated_at": "2017-07-19 18:00:54",
 "game": "x",
 "channel": "y",
 "game_id": 11290,
 "channel_id": 67
 }
 ]
}

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datatable怎样实现异步加载