Php 使用CodeIgniter的Jquery Ajax调用

我正在尝试设置一种方法，使我的页面上的两个表自动更新，或者如果我“异步”出错，请更正我。我需要第二到第二次更新以及。我也在使用CodeIgnighter MVC框架，至于我的表，我在使用DataTables。我的Jquery如下所示：

<script>
        function updatewaiting(){
        $('.display').load('https://www.finaidtest.com/index.php/studentqueue_controller/data');
        }
        setInterval( "updatewaiting()", 1000 );

    </script>

<table id='waiting' class='display'>
        <thead>
        <tr>
            <th>ID</th>
            <th>A Number</th>
            <th>First Name</th>
            <th>Last Name</th>
            <th>Time Waiting</th>
            <th>Reason for visit</th>
            <th>Comments</th>
            <th>Aid Year</th>
            <th>Staff Comments</th>
            <th>Options</th>
        </tr>
        </thead>
        <tbody>

        <?php
        $options = array("" => "", 'start' => 'Start Session', 'stop' => 'Student Not Present', 'abandon' => 'End Session',);
        foreach ($waiting as $row) {
            ?>
            <tr>
                <td><?php echo htmlspecialchars($row['id'], ENT_QUOTES, 'UTF-8'); ?></td>
                <td><?php echo anchor('studentqueue_controller/history/' . urlencode($row['anum']) . '', htmlspecialchars($row['anum'], ENT_QUOTES, 'UTF-8'), 'target="_blank"'); ?></td>
                <td><?php echo htmlspecialchars($row['first'], ENT_QUOTES, 'UTF-8'); ?></td>
                <td><?php echo htmlspecialchars($row['last'], ENT_QUOTES, 'UTF-8'); ?></td>
                <td><?php echo htmlspecialchars($row['SECOND'], ENT_QUOTES, 'UTF-8'); ?></td>
                <td><?php echo htmlspecialchars($row['reason'], ENT_QUOTES, 'UTF-8'); ?></td>
                <td><?php echo htmlspecialchars($row['studentcomments'], ENT_QUOTES, 'UTF-8'); ?></td>
                <td><?php echo htmlspecialchars($row['aidyear'], ENT_QUOTES, 'UTF-8'); ?></td>
                <td><?php echo htmlspecialchars($row['counselorcomments'], ENT_QUOTES, 'UTF-8'); ?></td>
                <td>
                <?php echo form_open('studentqueue_controller/counselorscreen/' . urlencode($row['id']) . ''); ?>
                <?php echo form_dropdown('options', $options, ""); ?>
                <?php echo form_submit('submit', 'Submit'); ?>
                <?php echo form_close(); ?>
                </td>
            </tr>

            <?php }
        ?>
        </tbody>
    </table>

<table id='beingseen' class='display'>
        <thead>
        <tr>
            <th>ID</th>
            <th>A Number</th>
            <th>First Name</th>
            <th>Last Name</th>
            <th>Sign In Time</th>
            <th>Staff Member</th>
            <th>Start Time</th>
            <th>Options</th>
        </tr>
        </thead>
        <tbody>
        <?php $options1 = array("" => "", 'continue' => 'Continue Session', 'terminate' => 'Terminate Session',);
        foreach ($beingseen as $row1) {
            ?>
            <tr>
                <td><?php echo htmlspecialchars($row1['id'], ENT_QUOTES, 'UTF-8'); ?></td>
                <td><?php echo htmlspecialchars($row1['anum'], ENT_QUOTES, 'UTF-8'); ?></td>
                <td><?php echo htmlspecialchars($row1['first'], ENT_QUOTES, 'UTF-8'); ?></td>
                <td><?php echo htmlspecialchars($row1['last'], ENT_QUOTES, 'UTF-8'); ?></td>
                <td><?php echo htmlspecialchars($row1['signintime'], ENT_QUOTES, 'UTF-8'); ?></td>
                <td><?php echo htmlspecialchars($row1['fname'], ENT_QUOTES, 'UTF-8'); ?></td>
                <td><?php echo htmlspecialchars($row1['starttime'], ENT_QUOTES, 'UTF-8'); ?></td>
                <td>
                <?php echo form_open('studentqueue_controller/counselorscreen/' . urlencode($row1['id']) . ''); ?>
                <?php echo form_dropdown('options', $options1, ""); ?>
                <?php echo form_submit('submit', 'Submit'); ?>
    <?php echo form_close(); ?>
                </td>
                </td>
            </tr>
<?php } ?>


        </tbody>
    </table>

我很困惑，为什么当我查看我的网络选项卡时会看到ajax调用，但在网络选项卡中却没有看到响应

只是一个更新：

Array ( [waiting] => Array ( [0] => Array ( [id] => 176 [0] => 176 [anum] => A00163047 [1] => A00163047 [first] => rix [2] => rix [last] => aja [3] => aja [SECOND] => 62:47:39 [4] => 62:47:39 [reason] => Award Status [5] => Award Status [studentcomments] => [6] => [aidyear] => 13-14 [7] => 13-14 [counselorcomments] => [8] => ) [1] => Array ( [id] => 179 [0] => 179 [anum] => A00163047 [1] => A00163047 [first] => rix [2] => rix [last] => aja [3] => aja [SECOND] => 00:22:29 [4] => 00:22:29 [reason] => Award Status [5] => Award Status [studentcomments] => [6] => [aidyear] => 13-14 [7] => 13-14 [counselorcomments] => [8] => ) [2] => Array ( [id] => 178 [0] => 178 [anum] => A12345678 [1] => A12345678 [first] => ririri [2] => ririri [last] => ririir [3] => ririir [SECOND] => 00:24:21 [4] => 00:24:21 [reason] => Award Status [5] => Award Status [studentcomments] => [6] => [aidyear] => 13-14 [7] => 13-14 [counselorcomments] => [8] => ) [3] => Array ( [id] => 177 [0] => 177 [anum] => A99999999 [1] => A99999999 [first] => rux [2] => rux [last] => ajaj [3] => ajaj [SECOND] => 00:29:20 [4] => 00:29:20 [reason] => Award Status [5] => Award Status [studentcomments] => [6] => [aidyear] => 13-14 [7] => 13-14 [counselorcomments] => [8] => ) ) [beingseen] => )

---

我的数据函数实际上是将数据返回控制器。我刚刚打印了我的数据。但是，返回的数据数组被放入表本身，

在您的情况下，您应该使用

load（）

加载视图并在javascript中打印它，因此使用：

function data(){
        $this->load->model('queue_model');

        $data['waiting'] = $this->queue_model->waiting();
        $data['beingseen'] = $this->queue_model->beingseen();

        echo $this->load->view('myview',$data,true);
    }

并且您的视图将输出到您使用

$（_element）.load（）指定的位置

为了确保您理解load（）jquery方法：

当您执行
$（'div#element'）.load（'myfile.php'）
您正在
将myfile.php返回的数据输出到html
元素
您的数据函数没有返回任何内容。是的，它返回到控制器，但控制器没有将其返回到视图。没有返回，没有打印，视图永远看不到这些数据。网络选项卡中仍然会显示这些数据，我该如何处理json_编码的数据？就把它扔到视图上好吗？如果我这样做，那么表就会不断弹出，破坏页面的视图。@Joe记住，load（）-->是您要输出的，$（'.display'）-->是您要输出的；）我很抱歉？我很了解你jquery@Joe当您执行$（'#element'）.load（'myfile.php'）时，没有问题；您正在将myfile.php返回的数据输出到id=“element”html元素中
function data(){
        $this->load->model('queue_model');

        $data['waiting'] = $this->queue_model->waiting();
        $data['beingseen'] = $this->queue_model->beingseen();

        echo $this->load->view('myview',$data,true);
    }