jQuery+datatables插件实现ajax加载数据与增删改查功

<div class="thead">
  <input placeholder="请输入搜索内容" id="searchTitle" type="text"/>
  <button id="search" class="layui-btn layui-btn-small layui-btn-primary"><i class="layui-icon">o</i> 搜索</button>
  <button id="add" class="layui-btn layui-btn-small layui-btn-primary"><i class="layui-icon">y</i> 新增</button>
  <button id="change" class="layui-btn layui-btn-small layui-btn-primary"><i class="layui-icon"></i> 编辑</button>
  <button id="del" class="layui-btn layui-btn-small layui-btn-primary"><i class="layui-icon"></i> 删除</button>
</div>
<table id="table" class="display" cellspacing="0" width="100%">
  <thead>
  <tr>
    <th>职业</th>
    <th>姓名</th>
    <th>性别</th>
    <th>爱好</th>
  </tr>
  </thead>
</table>

//点击查找
$("#search").click(function () {
    table.ajax.reload();
});
//初始化datatables
var table = $('#example').DataTable({
    "searching": false,
    "serverSide": true,
    "bProcessing": true,
    "bPaginate": true, //翻页功能
    "bLengthChange": true, //改变每页显示数据数量
    "bFilter": true, //过滤功能
    "bSort": false, //排序功能
    "sPaginationType": "full_numbers",
    "fnServerData": function (sSource, aoData, fnCallback) {
      var json = {
        "page": {
          "start": aoData[3].value,
          "length": aoData[4].value,
        },
        "search": {
          "xb": $("#searchTitle").val()
        }
      };
      $.ajax({
        "dataType": 'json',
        "type": "POST",
        "url": server + "user/queryUser.do",
        "contentType": "application/json; charset=utf-8",
        "data": JSON.stringify(json),
        "suess": function (data) {
          data.recordsTotal = data.page.recordsTotal;
          data.recordsFiltered = data.page.recordsTotal;
          fnCallback(data);
        }
      });
    },
    "oLanguage": {
      "sLengthMenu": "每页显示 _MENU_ 条记录",
      "sZeroRecords": "抱歉， 没有找到",
      "sInfoEmpty": "没有数据",
      "sInfoFiltered": "(从 _MAX_ 条数据中检索)",
      "oPaginate": {
        "sFirst": "首页",
        "sPrevious": "前一页",
        "sNext": "后一页",
        "sLast": "尾页"
      },
      "sZeroRecords": "没有检索到数据",
    },
    "aoColumns": [
      {"data": "zy"},
      {"data": "xm"},
      {"data": "xb"},
      {"data": "fov"}
    ]
});
///////////////////////////////////////////////////////////////////////////////
//增加
$("#add").click(function () {
    layer.open({
      type: 1,
      skin: 'layui-layer-rim', //加上边框
      area: ['420px', '240px'], //宽高
      btn: ['确定'],
      yes: function (index, layero) {
        var json = {
          "zy": $("#zhiy").val(),
          "xm": $("#name").val(),
          "xb": $("#sex").val(),
          "fov_ck": $("#aihao").val()
        };
        $.ajax({
          type: "POST",
          url: server + "user/addUser.do",
          contentType: "application/json; charset=utf-8",
          data: JSON.stringify(json),
          dataType: "json",
          suess: function (data) {
            if (data.suess == true) {
              layer.msg(data.msg);
            } else if (data.suess == false) {
              layer.msg(data.msg);
            }
          }
        });
        layer.close(index);
        table.ajax.reload();
      },
      content: '职业' + '<input type="text" name="" id="zhiy" value=""/>' + '<br>姓名'
      + '<input type="text" name="" id="name" value=""/>' + '<br>性别'
      + '<input type="text" name="" id="sex" value=""/>' + '<br>爱好'
      + '<input type="text" name="" id="aihao" value=""/>'
    });
});
//选中一行触发
$('#example tbody').on('click', 'tr', function () {
    if ($(this).hasClass('selected')) {
      $(this).removeClass('selected');
      adatid = "";
    }
    else {
      table.$('tr.selected').removeClass('selected');
      $(this).addClass('selected');
      adatid = table.row(this).data().guid;
      adata = table.row(this).data().zy;
      bdata = table.row(this).data().xm;
      cdata = table.row(this).data().xb;
      ddata = table.row(this).data().fov;
    }
});
////////////////////////////////////////////////////////////////////////////////////////
//修改
$("#change").click(function () {
    if (adatid === '') {
      alert("请选中要修改的数据");
    } else {
      layer.open({
        type: 1,
        skin: 'layui-layer-rim', //加上边框
        area: ['420px', '240px'], //宽高
        btn: ['确定'],
        yes: function (index, layero) {
          var json = {
            "guid": adatid,
            "zy": $("#cid").val(),
            "xm": $("#ame").val(),
            "xb": $("#csex").val(),
            "fov_ck": $("#cage").val()
          };
          $.ajax({
            type: "POST",
            url: server + "user/updateUser.do",
            contentType: "application/json; charset=utf-8",
            data: JSON.stringify(json),
            dataType: "json",
            suess: function (data) {
              if (data.suess == true) {
                layer.msg(data.msg);
              } else if (data.suess == false) {
                layer.msg(data.msg);
              }
            }
          });
          layer.close(index);
          table.ajax.reload();
        },
        content: '职业' + '<input type="text" name="" id="cid"/>' + '<br>姓名'
        + '<input type="text" name="" id="ame"/>' + '<br>性别'
        + '<input type="text" name="" id="csex"/>' + '<br>爱好'
        + '<input type="text" name="" id="cage"/>'
      });
    }
    $("#cid").val(adata);
    $("#ame").val(bdata);
    $("#csex").val(cdata);
    $("#cage").val(ddata);
});
////////////////////////////////////////////////////////////////////////////////
//删除
$("#del").click(function () {
    if (adatid === '') {
      alert("请删除要修改的数据");
    } else {
      var json = {
        "guid": adatid
      };
      $.ajax({
        type: "POST",
        url: server + "user/deleteUser.do",
        contentType: "application/json; charset=utf-8",
        data: JSON.stringify(json),
        dataType: "json",
        suess: function (data) {
          if (data.suess == true) {
            layer.msg(data.msg);
          } else if (data.suess == false) {
            layer.msg(data.msg);
          }
        }
      });
      table.ajax.reload();
    }
});