AJAX：将一组值数组发布到php

Question

我对javascript / jquery几乎一无所知：

我有一个ajax调用，它返回以html表格式设置的条目，如下所示：

Stuff |   Other stuff  |  delete stuff
------|----------------|-------------------------
value1| from database  | delete this entry button
------|----------------|-------------------------
value2| from database  | delete this entry button

上方的“删除内容”列中有一个按钮，该按钮将调用一种方法来删除该条目。 我一直想做的是在每行的末尾添加一个支票簿，并向php发送一个数组以删除多条记录。

这里是电话：

 $('#menu-notifications').click(function() { 
                $.ajax({
                    type: 'GET',
                    url: '/admin/notifications/ajax_view_notifications/' + <?= $this->session->userdata('user_id'); ?>,
                    dataType: 'json',
                    cache: false,
                    success: function(data) {
                        $("#notifications-modal .modal-body table").find("tr:gt(0)").remove();
                        $.each(data, function(i, obj) {
                            $('#notifications-modal .modal-body table tr:last').after(
                                                    '<tr><td>' + htmlDecode(obj.message) + '</td>' + 
                                                    '<td>' + obj.created_by + '</td>' + 
                                                    '<td>' + obj.created_dt + '</td>' + 
                                                    '<td><div class="btn-group">' + 
                                                    '<a href="/admin/notifications/ajax_delete_notification/' + obj.id + '" class="btn btn-mini delete-notification" id="delete-notification" data-dismiss="modal"><i class="icon-remove"></i></a>' +
                                                    // here should be a checkbox to mark for deletion
                                                    '</div></td></tr>');
                        });
                    }
                });

我已经成功添加了该复选框，但是每次尝试使用<?=form_open();?>或打开其他表单都导致页面完全无法加载（控制台中没有任何内容）。

总结一下：我试图在每个行的末尾附加一个复选框，我可以标记此复选框，然后将每个标记的复选框发送给一个方法。

Answer 1

您需要使用HTML数组创建每个复选框，其值将是元素ID，然后您需要一个操作（如“ Delete All ”按钮），以使用Ajax将数据发送到PHP（无需表格）：

$('#menu-notifications').click(function() {
    // Simpler: use getJSON
    $.getJSON('/admin/notifications/ajax_view_notifications/' + <?= $this->session->userdata('user_id'); ?>)
    // Clearner: use promises :)
    .done(function(data) {
        $("#notifications-modal .modal-body table").find("tr:gt(0)").remove();
        $.each(data, function(i, obj) {
            // Create a row
            var row = $('<tr>');
            // Crete cells
            var cells =
                '<td>' + htmlDecode(obj.message) + '</td>' +
                '<td>' + obj.created_by + '</td>' +
                '<td>' + obj.created_dt + '</td>' +
                // We use this identified cell to create our delete functionality
                '<td class="delete-row"></td>';
            // Fill the row
            row.append(cells);
            // Create the delete button
            var deleteButton = $('<a>', {
                 'href':        '/admin/notifications/ajax_delete_notification/' + obj.id
                ,'class':       'btn btn-mini delete-notification'
                // We can't have duplicate ids, so no ids here
                // ,id:         'delete-notification'
                ,'data-dismiss':'modal'
                ,'html':        '<i class="icon-remove"></i>'
            });
            // Crete the checkbox
            var checkbox = $('input', {
                 'type':        'checkbox'
                // We use an HTML array
                ,'name':        'rowsToDelete[]'
                ,'value':       obj.id
            });
            // Append the button and the checkbox to the row
            // I ignore the .btn-group on purpose
            row.find('.delete-row')
                .append(deleteButton)
                .append(checkbox);
            // We add the row to the DOM
            $('#notifications-modal .modal-body table tr:last').append(row);
        });
    });

});

// To delete in group we use a different call, let's say, a 'Delete All' button
$('#delete-all').click(function() {
    // We serialize the info of all the buttons
    // Find all checkbox under the .delete-row class and serialize it
    data = $('.delete-row').find(':checkbox').serialize();
    // Send the data to PHP
    $.post('/admin/notifications/ajax_delete_notification/delete_a_bunch', data)
    // PHP would receive $_POST['rowsToDelete'] = [1, 2, 4, 20]
    .done(function(data) {
        alert('All selected rows were deleted');
    })
    .fail(function() {
        alert('No rows deleted :/');
    });
});

---

测试片段

 // To delete in group we use a different call, let's say, a 'Delete All' button $('#delete-all').click(function() { // We serialize the info of all the buttons // Find all checkbox under the .delete-row class and serialize it data = $('.delete-row').find(':checkbox').serialize(); // Alert the data (test only) $("#r").text(data.replace(/deleteRow/g, '$_POST[deleteRow]').replace(/%5B%5D/g, '[]').replace(/\\&/g, ";\\n") + ';'); /* // Send the data to PHP $.post('/admin/notifications/ajax_delete_notification/delete_a_bunch', data) // PHP would receive $_POST['rowsToDelete'] = [1, 2, 4, 20] .done(function(data) { alert('All selected rows were deleted'); }) .fail(function() { alert('No rows deleted :/'); }); */ }); 

 table { width: 100%; } th, td { border-bottom: 1px solid #ddd; text-align: left; } #r { display: block; border-top: 1px solid #ddd; padding: 10px 0; margin-top: 10px; height: 50px; } 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.10.0/jquery.min.js"></script> <table> <thead> <tr> <th>Dummy header</th> <th>Dummy header</th> <th>Dummy header</th> <th>Check to delete</th> </tr> </thead> <tbody> <tr> <td>Dummy Text</td> <td>Dummy Text</td> <td>Dummy Text</td> <td class="delete-row"> <input type="checkbox" name="deleteRow[]" value="2"> </td> </tr> <tr> <td>Dummy Text</td> <td>Dummy Text</td> <td>Dummy Text</td> <td class="delete-row"> <input type="checkbox" name="deleteRow[]" value="3"> </td> </tr> <tr> <td>Dummy Text</td> <td>Dummy Text</td> <td>Dummy Text</td> <td class="delete-row"> <input type="checkbox" name="deleteRow[]" value="6"> </td> </tr> <tr> <td>Dummy Text</td> <td>Dummy Text</td> <td>Dummy Text</td> <td class="delete-row"> <input type="checkbox" name="deleteRow[]" checked value="10"> </td> </tr> </tbody> </table> <hr> <button id="delete-all">Delete all elements</button> <pre id="r"></pre>