检查jQuery DataTables中是否选择了任何行

I am trying to write a function to check if any of the table rows are selected.

我正在尝试编写一个函数来检查是否选择了任何表行。

I need this function to be triggered at any <tr> click.

我需要在任何点击时触发此功能。

Thank you.

Here is my code for selecting rows:

这是我选择行的代码:

$('#Request tbody').on('click', 'tr', function () {
     if ($(this).hasClass('selected')) {
          $(this).removeClass('selected');
     } else {
          oTable.$('tr.selected').removeClass('selected');
          $(this).addClass('selected');
     }
});

4 个解决方案

#1

As of Datatables 1.10, there is an any() method that can be used:

从Datatables 1.10开始,有一个可以使用的any()方法:

var table = $('#example').DataTable();

if ( table.rows( '.selected' ).any() )
    // Your code here

#2

You have answer in your question already. The code below would let you determine if there are any selected rows.

你已经回答了你的问题。下面的代码可以让您确定是否有任何选定的行。

var $rows = oTable.$('tr.selected');

// If some rows are selected
if($rows.length){

// Otherwise, if no rows are selected
} else {

}

I assume that somewhere in your code you have var oTable = $('#Request').DataTable(). Otherwise you can use $('#Request').DataTable().

我假设代码中的某处有var oTable = $('#Request')。DataTable()。否则你可以使用$('#Request')。DataTable()。

#3

Using the API.

使用API。

var oTable = $("#yourtable").DataTable();

anyRowSelected = oTable.rows({selected : true}).indexes().length === 0 ? false : true;//false - nothing selected. true - 1 or more are selected.

#4

var table = $('#foo-table').DataTable();
var selectedRows = table.rows({ selected: true });

This is proper way to get the selected rows as of DataTables 1.10.8.

这是从DataTables 1.10.8获取所选行的正确方法。

#1