Question

我想启动一个AJAX调用，在页面加载时第一次刷新表，但是从那时开始需要它每隔XX秒运行一次，但每当用户按下“刷新”按钮时也是如此。

现在我不想制作相同代码的3个副本并将其绑定到3个不同的发射器，最好的方法是什么？

此处每5秒运行一次，但不会在页面加载或按钮单击

时运行

  <script type="text/javascript" language="javascript">
    $(function() {
        var prevAjaxReturned = true;
        var xhr = null;

        setInterval(function() {
            if( prevAjaxReturned ) {
                prevAjaxReturned = false;
            } else if( xhr ) {
                xhr.abort( );
            }

            xhr = $.ajax({
                type: 'POST',
                url: '../../plugins/MySQL/ajax_action.php',
                data: {
                    action: 'refresh_rescap_reqs',
                    holidex: '<?php echo($_SESSION['Holidex']); ?>',
                    access: '<?php echo $_SESSION['Access']; ?>'
                },
                //dataType: 'json',
                success: function(data) {
                    $('#Last20Requests').html(data);
                    prevAjaxReturned = true;
               },
            });

        }, 5000);   // 1000ms = 1 sec
    });
  </script>

由于

Answer 1

将函数绑定到变量，然后重复使用它。

<script type="text/javascript" language="javascript">
$(function() {
    var prevAjaxReturned = true;
    var xhr = null;

    var functionToRun = function() {
        if( prevAjaxReturned ) {
            prevAjaxReturned = false;
        } else if( xhr ) {
            xhr.abort( );
        }

        xhr = $.ajax({
            type: 'POST',
            url: '../../plugins/MySQL/ajax_action.php',
            data: {
                action: 'refresh_rescap_reqs',
                holidex: '<?php echo($_SESSION['Holidex']); ?>',
                access: '<?php echo $_SESSION['Access']; ?>'
            },
            //dataType: 'json',
            success: function(data) {
                $('#Last20Requests').html(data);
                prevAjaxReturned = true;
           },
        });

    };

    setInterval(functionToRun, 5000);   // 1000ms = 1 sec
    $(document).on('click', functionToRun);
    functionToRun();
});

Answer 2

在函数中包装ajax调用并调用此函数3次

＆＃13;

$(function() {
    var prevAjaxReturned = true;
    var xhr = null;

    var repeatFunction = function() {
        if( prevAjaxReturned ) {
            prevAjaxReturned = false;
        } else if( xhr ) {
            xhr.abort( );
        }

        xhr = $.ajax({
            type: 'POST',
            url: '../../plugins/MySQL/ajax_action.php',
            data: {
                action: 'refresh_rescap_reqs',
                holidex: '<?php echo($_SESSION['Holidex']); ?>',
                access: '<?php echo $_SESSION['Access']; ?>'
            },
            //dataType: 'json',
            success: function(data) {
                $('#Last20Requests').html(data);
                prevAjaxReturned = true;
           },
        });

    };
    repeatFunction();
    setInterval(repeatFunction, 5000);   // 1000ms = 1 sec
    $("#reload").on('click', repeatFunction);
});

＆＃13;

<a href="javascript:void(0)" id="reload">Reload</a>

＆＃13;

JS / jQuery - 页面加载时启动功能和每x秒一次点击

2 个答案: