为jquery datatable列动态设置数据源

$('#example').DataTable( {
    columns: [
        { data: 'name' },
        { data: 'position' },
        { data: 'salary' },
        { data: 'office' },
        { data: 'start_date' },
        { data: 'extn' }
    ]
} );

$('#example').DataTable( {
    columns: [
        { data: 'employee.name' },
        { data: 'employee.position' },
        { data: 'employee.salary' },
        { data: 'employee.office' },
        { data: 'employee.start_date' },
        { data: 'employee.extn' }
    ]
} );

$('#example').DataTable( {
    columns: [
        { 
            data: function(row) {
                return row.name + ' (' + row.position + ')';
            }
        },
        { data: 'salary' },
        { data: 'office' },
        { data: 'start_date' },
        { data: 'extn' }
    ]
} );