javascript - 按钮单击不从数据表行触发

Question

我正在使用 Datatables在表中显示数据，我尝试为每一行创建一个按钮并使用 columns.render 捕获点击事件。

我使用 JQuery 创建了按钮并尝试添加一个似乎不起作用的点击事件

我知道还有其他方法可以做到这一点，但为什么这个方法不起作用？

var dataSet = [
  ["Tiger Nixon", "System Architect", "Edinburgh", "5421", "2011/04/25", "$320,800"],
  ["Garrett Winters", "Accountant", "Tokyo", "8422", "2011/07/25", "$170,750"],
  ["Ashton Cox", "Junior Technical Author", "San Francisco", "1562", "2009/01/12", "$86,000"],
  ["Cedric Kelly", "Senior Javascript Developer", "Edinburgh", "6224", "2012/03/29", "$433,060"],
  ["Airi Satou", "Accountant", "Tokyo", "5407", "2008/11/28", "$162,700"],
  ["Brielle Williamson", "Integration Specialist", "New York", "4804", "2012/12/02", "$372,000"],
  ["Herrod Chandler", "Sales Assistant", "San Francisco", "9608", "2012/08/06", "$137,500"],
  ["Rhona Davidson", "Integration Specialist", "Tokyo", "6200", "2010/10/14", "$327,900"]
];


$('#example').DataTable({
  data: dataSet,
  responsive: true,
  columns: [{
      title: "Name"
    },
    {
      title: "Position"
    },
    {
      title: "Office"
    },
    {
      title: "Extn."
    },
    {
      title: "Start date"
    },
    {
      title: "Salary"
    },
    {
      "render": function(data, type, row, meta) {

        var button = $('<button/>', {
          html: "Click!"
        });

        button.click(function() {
          alert("Click event working");
        });

        return button[0].outerHTML;
      }
    }

  ]
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="//cdn.datatables.net/1.10.16/js/jquery.dataTables.min.js"></script>
<link href="//cdn.datatables.net/1.10.16/css/jquery.dataTables.min.css" rel="stylesheet" />

<table id="example" width="100%"></table>

Answer 1

问题是因为 render 逻辑正在根据您提供的字符串构建新元素。这意味着，虽然您将 click 处理程序附加到该元素，但它会丢失，因为 jQuery 对象未用于附加新内容。

要解决此问题，您可以在 button 元素上使用委托(delegate)事件处理程序:

var dataSet = [
  ["Tiger Nixon", "System Architect", "Edinburgh", "5421", "2011/04/25", "$320,800"],
  ["Garrett Winters", "Accountant", "Tokyo", "8422", "2011/07/25", "$170,750"],
  ["Ashton Cox", "Junior Technical Author", "San Francisco", "1562", "2009/01/12", "$86,000"],
  ["Cedric Kelly", "Senior Javascript Developer", "Edinburgh", "6224", "2012/03/29", "$433,060"],
  ["Airi Satou", "Accountant", "Tokyo", "5407", "2008/11/28", "$162,700"],
  ["Brielle Williamson", "Integration Specialist", "New York", "4804", "2012/12/02", "$372,000"],
  ["Herrod Chandler", "Sales Assistant", "San Francisco", "9608", "2012/08/06", "$137,500"],
  ["Rhona Davidson", "Integration Specialist", "Tokyo", "6200", "2010/10/14", "$327,900"]
];

$('#example').DataTable({
  data: dataSet,
  responsive: true,
  columns: [
    { title: "Name" }, 
    { title: "Position" }, 
    { title: "Office" }, 
    { title: "Extn." }, 
    { title: "Start date" }, 
    { title: "Salary" }, 
    {
      "render": function(data, type, row, meta) {
        return '<button data-name="' + row[0] + '">Click!</button>';
      }
    }
  ]
});

$('#example').on('click', 'button', function() {
  console.log($(this).data('name'));
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="//cdn.datatables.net/1.10.16/js/jquery.dataTables.min.js"></script>
<link href="//cdn.datatables.net/1.10.16/css/jquery.dataTables.min.css" rel="stylesheet" />

<table id="example" width="100%"></table>