Question

有人可以帮助我了解如何在点击事件中获取单行数据。

这是在执行AJAX调用中的Success函数之后动态填充的表

<div class="table-responsive table-wrap tableFixHead container-fluid">
<table class="table bg-violet dT-contain" id="datatable" >
    <thead class="thead-dark">
        <tr>
            <th>No.</th>
            <th>Main</th>
            <th>Shrinked</th>
            <th>Clicks</th>
            <th>Disable</th>
            <th>Delete</th>
        </tr>
    </thead>
    <tbody>
        <tr class="bg-violet">

        </tr>
    </tbody>
</table>
</div>

<script src="scripts/jquery-3.5.1.min.js"></script>
<script src="scripts/jquery.dataTables.min.js"></script>
<script src="scripts/dataTables.bootstrap4.min.js" defer></script>
<script src="scripts/dashboard.js" defer></script>

这是我的ajax成功功能

success: function(data){
        $('#datatable').dataTable({
        data: data,
        "autoWidth": true,
        columns: [
            {'data': 'id'},
            {'data': 'main'},
            {'data': 'shrinked'},
            {'data': 'clicks'},
            {"defaultContent": "<button id='del-btn'>Delete</button>"}
            ]
        })
    }

我正在为每行动态添加一个删除按钮，但是似乎无法使用它来获取行数据。我对成功功能做了一些调整，尝试了这种方法

$('#datatable tbody').on( 'click', 'button', function () {
    var data = table.row( $(this).parents('tr') ).data();
    alert( data[0] );
} );

但这似乎不起作用。

从AJAX调用返回的JSON数据采用以下格式：

[{"id":"12","main":"ndkekfnq" ...}, {.....}]

我还在删除按钮上添加了一个onclick函数，以尝试获取数据，但这还是行不通的。

编辑：整个AJAX请求

$(document).ready(()=>{
$.ajax({
    url: 'URL',
    method: 'post',
    dataType: 'json',
    data: {
        "email": window.email,
        "token": window.token
    },
    success: function(data){
        let table = $('#datatable').dataTable({
        data: data,
        "autoWidth": true,
        columns: [
                {'data': 'id'},
                {'data': 'main'},
                {'data': 'shrinked'},
                {'data': 'clicks'},
                {"defaultContent": "<button id='dis-btn' class='btn btn-warning'>Disable</button>"},
                {"defaultContent": "<button id='del-btn' class='btn btn-danger'>Delete</button>"}
            ]
        })
        $('#datatable tbody').on('click', "#del-btn", function() {
            let row = $(this).parents('tr')[0];
            //for row data
            console.log(table.row(row).data().id);
        });
    }
})

}）

正确的方法是什么？谢谢

Answer 1

这是您的有效代码。您需要在datatables中设置var。

使用该var table查找clicked row，该$(this).parents('tr')[0]并将.data.id用于点击的项目id

我已经重新创建了您的示例，并且可以正常工作。只需将您对ajax的响应设置为data。

演示

//Ajax Data
var data = [{
  "id": "10",
  "main": "ndkekfnq",
  "shrinked": "ndkekfnq",
  "clicks": "ndkekfnq"
}, {
  "id": "12",
  "main": "Something",
  "shrinked": "Data",
  "clicks": "Ha"
}]

//Data Table
var table = $('#datatable').DataTable({
  data: data,
  columns: [{
      'data': 'id'
    },
    {
      'data': 'main'
    },
    {
      'data': 'shrinked'
    },
    {
      'data': 'clicks'
    },
    {
      "defaultContent": "<button id='del-btn'>Delete</button>"
    }
  ]
});


$('#datatable tbody').on('click', "#del-btn", function() {
  var row = $(this).parents('tr')[0];
  //for row data
  console.log(table.row(row).data().id);
});

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/datatables/1.10.21/js/jquery.dataTables.min.js" integrity="sha512-BkpSL20WETFylMrcirBahHfSnY++H2O1W+UnEEO4yNIl+jI2+zowyoGJpbtk6bx97fBXf++WJHSSK2MV4ghPcg==" crossorigin="anonymous"></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/datatables/1.10.21/css/jquery.dataTables.min.css" integrity="sha512-1k7mWiTNoyx2XtmI96o+hdjP8nn0f3Z2N4oF/9ZZRgijyV4omsKOXEnqL1gKQNPy2MTSP9rIEWGcH/CInulptA==" crossorigin="anonymous" />
<div class="table-responsive table-wrap tableFixHead container-fluid">
  <table class="table bg-violet dT-contain" id="datatable">
    <thead class="thead-dark">
      <tr>
        <th>No.</th>
        <th>Main</th>
        <th>Shrinked</th>
        <th>Clicks</th>
        <th>Delete</th>
      </tr>
    </thead>
    <tbody>
      <tr class="bg-violet">

      </tr>
    </tbody>
  </table>

Answer 2

您需要使用column.render而不是defaultContent，然后在外部函数上获取数据，您需要在表的呈现位置呈现一个按钮：

    <!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <link
      rel="stylesheet"
      href="https://cdn.datatables.net/1.10.21/css/jquery.dataTables.min.css"
    />
    <script src="https://code.jquery.com/jquery-3.5.1.js"></script>
    <script src="https://cdn.datatables.net/1.10.21/js/jquery.dataTables.min.js"></script>
  </head>
  <body>
    <div class="table-responsive table-wrap tableFixHead container-fluid">
        <table class="table bg-violet dT-contain" id="datatable" >
            <thead class="thead-dark">
                <tr>
                    <th>No.</th>
                    <th>Main</th>
                    <th>Shrinked</th>
                    <th>Clicks</th>
                    <th>Delete</th>
                </tr>
            </thead>
            <tbody>
                <tr class="bg-violet">
        
                </tr>
            </tbody>
        </table>
    <script>
      $('#datatable').dataTable( {
            "data": [{'id':20,'main':'hola','shrinked':false,'clicks':2000},{'id':21,'main':'hola','shrinked':false,'clicks':283000}],
            "autoWidth": true,
            "columns": [ 
                {"data": "id"},        
                {'data': 'main'},
                {'data': 'shrinked'},
                {'data': 'clicks'},
                {"data": "id",
                    "render": function ( data, type, row, meta ) { 
                        return '<button data-id="'+data+'" onclick="deleteThis(event)">Delete</button>'
                        }
                }
                
             ]
        } )

function deleteThis(e){
  console.log(e.target.getAttribute('data-id'))
}
    </script>
  </body>
</html>

还没有尝试过，但是基于Datatables文档，这应该有效，让我知道它是否有效。

Answer 3

@Javier的答案是解决OP问题的一种很好的方法。另一种方式是，如果您不想两次包含 id 字段，则如下所示：

"columns": [ 
            {"data": "id"},        
            {'data': 'main'},
            {'data': 'shrinked'},
            {'data': 'clicks'},
            {"data": null,
                "render": function ( data, type, row, meta ) { 
                    return '<button data-id="' + data.id + '" onclick="deleteThis(event)">Delete</button>'
                    }
            }
         ]

在数据表中单击按钮后如何获取行数据

3 个答案: