jQuery 代码不工作，但也没有显示错误答案

【问题标题】：jQuery code isn't working but also shows no errorsjQuery 代码不工作，但也没有显示错误
【发布时间】：2019-12-01 00:49:10
【问题描述】：

我有一些 jQuery 代码用于调用单独的 PHP 文件（其中还包含一个 jQuery 倒计时时钟），并且似乎没有加载任何 jQuery 代码部分，尽管根本没有显示任何错误。

我用来调用文件stats_bar.php的代码是：

<?php
    if(isset($_SESSION['uid'])){
        include("safe.php");
        include("cron_update_stats.php");
?>

        <div id="stats_bar"></div>

        <script>

        // Stats Bar Script - Currently Not Working

        $(document).ready(function() {
            function loadlink() {
                $.get('ajax/stats_bar.php', '', function(res) {
                    res = $(res).filter('#stats_bar');
                    $('#stats_bar').replaceWith(res);
                });
            }
            loadlink();

            setInterval(function(){
                loadlink(); // this will run after every 1 second
            }, 1000);
        });

        </script>

<?php
    }
?>

并且stats_bar.php 包含以下代码：

<div id="stats_bar">

    <script>
    function startTimer(duration, display) {
        var start = Date.now(),
                diff,
                minutes,
                seconds;
        function timer() {
            // get the number of seconds that have elapsed since 
            // startTimer() was called
            diff = duration - (((Date.now() - start) / 1000) || 0);

            // does the same job as parseInt truncates the float
            minutes = (diff / 60) || 0;
            seconds = (diff % 60) || 0;

            minutes = minutes < 10 ? "0" + minutes : minutes;
            seconds = seconds < 10 ? "0" + seconds : seconds;

            display.textContent = minutes + ":" + seconds; 

            if (diff <= 0) {
                // add one second so that the count down starts at the full duration
                // example 10:00 not 09:59
                start = Date.now() + 1000;
            }
        }
        // we don't want to wait a full second before the timer starts
        timer();
        setInterval(timer, 1000);
    }

    $(document).ready(function() {
        var tenMinutes = 60 * 10,
        display = document.querySelector('#time');
        startTimer(tenMinutes, display);
    });
    </script>

    <?php $clock = "<span id=\"time\"></span>"; ?>

    <header class="sticky-top">     

        <div class="d-lg-none d-xl-none">
            <div class="container-flex pt-2 pb-2" style="background-color: #191919">
                <div class="container"> 
                    <div class="justify-content-left text-light d-flex flex-column">
                        <div class="pl-md-3 pr-md-3"><b class="text-primary">TURNS &raquo;</b> <?php echo number_format($stats['turns']); ?> <?php if($stats['turns'] < 250){ echo "<small class='text-warning'>(+5 turns in $clock)</small>"; }else{ echo "<small class='text-danger'>(Max. turns)</small>"; }?></div>
                         <div class="pl-md-3 pr-md-3"><b class="text-primary">BANK &raquo;</b> Gold: <?php echo number_format($stats['bankgold']); ?> &#8901; Food: <?php echo number_format($stats['bankfood']); ?></div>
                         <div class="pl-md-3 pr-md-3"><b class="text-primary">RESOURCES &raquo;</b> Gold: <?php echo number_format($stats['gold']); ?> &#8901; Food: <?php echo number_format($stats['food']); ?></div>
                          <div class="pl-md-3 pr-md-3"><b class="text-primary">INCOME &raquo;</b> Workers: <?php echo number_format($unit['worker']); ?> &#8901; Farmers: <?php echo number_format($unit['farmer']); ?></div>
                          <div class="pl-md-3 pr-md-3"><b class="text-primary">BATTLE &raquo;</b> Warriors: <?php echo number_format($unit['warrior']); ?> &#8901; Defenders: <?php echo number_format($unit['defender']); ?> &#8901; Thieves: <?php echo number_format($unit['thief']); ?></div>
                          <div class="pl-md-3 pr-md-3"><b class="text-primary">WEAPONS &raquo;</b> Swords: <?php echo number_format($weapon['sword']); ?> &#8901; Shields: <?php echo number_format($weapon['shield']); ?></div>
                      </div>
                  </div>
              </div>
         </div>

         <div class="d-none d-lg-block">
             <div class="container-flex pt-3 pb-3" style="background-color: #191919">
                 <div class="container"> 
                     <div class="d-flex flex-wrap justify-content-left text-light">
                         <div class="pl-2 pl-md-3 pr-2 pr-md-3 pt-1 pb-1"><b class="text-primary">TURNS &raquo;</b> <?php echo number_format($stats['turns']); ?> <?php if($stats['turns'] < 250){ echo "<small class='text-warning'>(+5 turns in $clock)</small>"; }else{ echo "<small class='text-danger'>(Max. turns)</small>"; }?></div>
                         <div class="pl-2 pl-md-3 pr-2 pr-md-3 pt-1 pb-1"><b class="text-primary">BANK &raquo;</b> Gold: <?php echo number_format($stats['bankgold']); ?> &#8901; Food: <?php echo number_format($stats['bankfood']); ?></div>
                         <div class="pl-2 pl-md-3 pr-2 pr-md-3 pt-1 pb-1"><b class="text-primary">RESOURCES &raquo;</b> Gold: <?php echo number_format($stats['gold']); ?> &#8901; Food: <?php echo number_format($stats['food']); ?></div>
                         <div class="pl-2 pl-md-3 pr-2 pr-md-3 pt-1 pb-1"><b class="text-primary">INCOME UNITS &raquo;</b> Workers: <?php echo number_format($unit['worker']); ?> &#8901; Farmers: <?php echo number_format($unit['farmer']); ?></div>
                         <div class="pl-2 pl-md-3 pr-2 pr-md-3 pt-1 pb-1"><b class="text-primary">BATTLE UNITS &raquo;</b> Warriors: <?php echo number_format($unit['warrior']); ?> &#8901; Defenders: <?php echo number_format($unit['defender']); ?> &#8901; Thieves: <?php echo number_format($unit['thief']); ?></div>
                         <div class="pl-2 pl-md-3 pr-2 pr-md-3 pt-1 pb-1"><b class="text-primary">WEAPONS &raquo;</b> Swords: <?php echo number_format($weapon['sword']); ?> &#8901; Shields: <?php echo number_format($weapon['shield']); ?></div>
                     </div>
                 </div>
             </div>
         </div>

     </header>
</div>

当使用 include('ajax/stats_bar.php'); 而不是 jQuery 代码调用 PHP 文件时，一切正常，除了 PHP 文件中的 jQuery 倒计时时钟与使用的 jQuery 代码的行为方式相同调用 PHP 文件，但是我还检查了倒计时时钟代码是否有错误，它也没有显示任何错误，所以我现在很难过？

这里有什么我遗漏或忽略的东西吗？

更新

当内容位于单独的 PHP 文件中时，selfagency 给出的正确答案可用于通过使用 GET 和 POST 来实现所需的结果，但是我也能够使用正确答案中提供的信息来产生相同的结果仅使用主页的效果，这意味着加载内容之间没有延迟 - 我已包含以下代码。

请注意，这里取得的总体结果可能不是最好的结果，因为我发现这两种方法都是因为页面不断刷新 PHP 的部分，因此不断请求数据，请求的数量和总带宽是天文数字，以至于已经包含少量 PHP 请求的页面会很快崩溃。

我会继续寻找更好的解决方案！

<?php
                if(isset($_SESSION['uid'])){
                include("safe.php");
                include("cron_update_stats.php");
                    $currenttime = time();
                    $time = date('i:s', (10 * 60) - ($currenttime % (10 * 60)));
                    $bankgold_r = number_format($stats['bankgold']);
                    $bankfood_r = number_format($stats['bankfood']);
                    $gold_r = number_format($stats['gold']);
                    $food_r = number_format($stats['food']);
                    $worker_r = number_format($unit['worker']);
                    $farmer_r = number_format($unit['farmer']);
                    $warrior_r = number_format($unit['warrior']);
                    $defender_r = number_format($unit['defender']);
                    $thief_r = number_format($unit['thief']);
                    $sword_r = number_format($weapon['sword']);
                    $shield_r = number_format($weapon['shield']);
                    $turns_r = number_format($stats['turns']);
            ?>

            <script>
                setInterval("my_function();",1000); 
                function my_function(){
                    $('#refresh_countdown_clock').load(location.href + ' #countdown_clock');
                    $('#refresh_bankgold').load(location.href + ' #bankgold');
                    $('#refresh_bankgold_m').load(location.href + ' #bankgold_m');
                    $('#refresh_bankfood').load(location.href + ' #bankfood');
                    $('#refresh_bankfood_m').load(location.href + ' #bankfood_m');
                    $('#refresh_gold').load(location.href + ' #gold');
                    $('#refresh_gold_m').load(location.href + ' #gold_m');
                    $('#refresh_food').load(location.href + ' #food');
                    $('#refresh_food_m').load(location.href + ' #food_m');
                    $('#refresh_worker').load(location.href + ' #worker');
                    $('#refresh_worker_m').load(location.href + ' #worker_m');
                    $('#refresh_farmer').load(location.href + ' #farmer');
                    $('#refresh_farmer_m').load(location.href + ' #farmer_m');
                    $('#refresh_warrior').load(location.href + ' #warrior');
                    $('#refresh_warrior_m').load(location.href + ' #warrior_m');
                    $('#refresh_defender').load(location.href + ' #defender');
                    $('#refresh_defender_m').load(location.href + ' #defender_m');
                    $('#refresh_thief').load(location.href + ' #thief');
                    $('#refresh_thief_m').load(location.href + ' #thief_m');
                    $('#refresh_sword').load(location.href + ' #sword');
                    $('#refresh_sword_m').load(location.href + ' #sword_m');
                    $('#refresh_shield').load(location.href + ' #shield');
                    $('#refresh_shield_m').load(location.href + ' #shield_m');
                    $('#refresh_turns').load(location.href + ' #turns');
                    $('#refresh_turns_m').load(location.href + ' #turns_m');
                }
            </script>

     <header class="sticky-top">        

        <div class="d-lg-none d-xl-none">
        <div class="container-flex pt-2 pb-2" style="background-color: #191919">
            <div class="container"> 
            <div class="justify-content-left text-light d-flex flex-column">
            <div class="pl-md-3 pr-md-3"><b class="text-primary">TURNS &raquo;</b> <span id="refresh_turns_m"><span id="turns_m"><?php echo $turns_r; ?> <?php if($stats['turns'] < 250){ echo "<small class='text-warning'>(+5 turns in ".$time.")</small>"; }else{ echo "<small class='text-danger'>(Max. turns)</small>"; }?></span></span></div>
            <div class="pl-md-3 pr-md-3"><b class="text-primary">BANK &raquo;</b> Gold: <span id="refresh_bankgold_m"><span id="bankgold_m"><?php echo $bankgold_r; ?></span></span> &#8901; Food: <span id="refresh_bankfood_m"><span id="bankfood_m"><?php echo $bankfood_r; ?></span></span></div>
            <div class="pl-md-3 pr-md-3"><b class="text-primary">RESOURCES &raquo;</b> Gold: <span id="refresh_gold_m"><span id="gold_m"><?php echo $gold_r; ?></span></span> &#8901; Food: <span id="refresh_food_m"><span id="food_m"><?php echo $food_r; ?></span></span></div>
            <div class="pl-md-3 pr-md-3"><b class="text-primary">INCOME &raquo;</b> Workers: <span id="refresh_worker_m"><span id="worker_m"><?php echo $worker_r; ?></span></span> &#8901; Farmers: <span id="refresh_farmer_m"><span id="farmer_m"><?php echo $farmer_r; ?></span></span></div>
            <div class="pl-md-3 pr-md-3"><b class="text-primary">BATTLE &raquo;</b> Warriors: <span id="refresh_warrior_m"><span id="warrior_m"><?php echo $warrior_r; ?></span></span> &#8901; Defenders: <span id="refresh_defender_m"><span id="defender_m"><?php echo $defender_r; ?></span></span> &#8901; Thieves: <span id="refresh_thief_m"><span id="thief_m"><?php echo $thief_r; ?></span></span></div>
            <div class="pl-md-3 pr-md-3"><b class="text-primary">WEAPONS &raquo;</b> Swords: <span id="refresh_sword_m"><span id="sword_m"><?php echo $sword_r; ?></span></span> &#8901; Shields: <span id="refresh_shield_m"><span id="shield_m"><?php echo $shield_r; ?></span></span></div>
            </div>
            </div>
        </div>
        </div>

        <div class="d-none d-lg-block">
        <div class="container-flex pt-3 pb-3" style="background-color: #191919">
            <div class="container"> 
            <div class="d-flex flex-wrap justify-content-left text-light">
            <div class="pl-2 pl-md-3 pr-2 pr-md-3 pt-1 pb-1"><b class="text-primary">TURNS &raquo;</b> <span id="refresh_turns"><span id="turns"><?php echo $turns_r; ?> <?php if($stats['turns'] < 250){ echo "<small class='text-warning'>(+5 turns in ".$time.")</small>"; }else{ echo "<small class='text-danger'>(Max. turns)</small>"; }?></span></span></div>
            <div class="pl-2 pl-md-3 pr-2 pr-md-3 pt-1 pb-1"><b class="text-primary">BANK &raquo;</b> Gold: <span id="refresh_bankgold"><span id="bankgold"><?php echo $bankgold_r; ?></span></span> &#8901; Food: <span id="refresh_bankfood"><span id="bankfood"><?php echo $bankfood_r; ?></span></span></div>
            <div class="pl-2 pl-md-3 pr-2 pr-md-3 pt-1 pb-1"><b class="text-primary">RESOURCES &raquo;</b> Gold: <span id="refresh_gold"><span id="gold"><?php echo $gold_r; ?></span></span> &#8901; Food: <span id="refresh_food"><span id="food"><?php echo $food_r; ?></span></span></div>
            <div class="pl-2 pl-md-3 pr-2 pr-md-3 pt-1 pb-1"><b class="text-primary">INCOME UNITS &raquo;</b> Workers: <span id="refresh_worker"><span id="worker"><?php echo $worker_r; ?></span></span> &#8901; Farmers: <span id="refresh_farmer"><span id="farmer"><?php echo $farmer_r; ?></span></span></div>
            <div class="pl-2 pl-md-3 pr-2 pr-md-3 pt-1 pb-1"><b class="text-primary">BATTLE UNITS &raquo;</b> Warriors: <span id="refresh_warrior"><span id="warrior"><?php echo $warrior_r; ?></span></span> &#8901; Defenders: <span id="refresh_defender"><span id="defender"><?php echo $defender_r; ?></span></span> &#8901; Thieves: <span id="refresh_thief"><span id="thief"><?php echo $thief_r; ?></span></span></div>
            <div class="pl-2 pl-md-3 pr-2 pr-md-3 pt-1 pb-1"><b class="text-primary">WEAPONS &raquo;</b> Swords: <span id="refresh_sword"><span id="sword"><?php echo $sword_r; ?></span></span> &#8901; Shields: <span id="refresh_shield"><span id="shield"><?php echo $shield_r; ?></span></span></div>
            </div>
            </div>
        </div>
        </div>

     </header>

【问题讨论】：

标签： javascript php jquery ajax

【解决方案1】：

jQuery load 方法不会执行 HTML 片段中包含的 JavaScript。尝试改用get 方法并使用回调将片段附加到您的页面。

试试：

// main.php

<div id="stats_bar"></div>

<script>
  $(document).ready(function() {
    function loadlink() {
        $.get('ajax/stats_bar.php', function(res) {
            res = $(res).filter('#stats_bar');
            $('#stats_bar').replaceWith(res);
        });
    }
    loadlink();
  });
</script>

// statsbar.php

<div id="stats_bar">
  <h1>Test</h1>
  <script>
    console.log('it works!');
  </script>
</div>

注意变化：

<script language="JavaScript" type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js">

到<script>。

您需要将<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"> 放入您的文档<head> 并在代码块的开头使用<script>。

您加载的 PHP 文件中的 JavaScript 似乎也有一些错误。替换这个：

<script language="JavaScript" type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js">

只有<script>。

然后在底部，更改：

window.onload = function() {
  var tenMinutes = 60 * 10,
    display = document.querySelector('#time');
  startTimer(tenMinutes, display);
};

到：

$(document).ready(function() {
  var tenMinutes = 60 * 10,
    display = document.querySelector('#time');
  startTimer(tenMinutes, display);
});

POST方法示例：

    function loadlink() {
        const data = {
          stats: {
            [...]
          }
        }

        $.post('ajax/stats_bar.php', data, function(res) {
            res = $(res).filter('#stats_bar');
            $('#stats_bar').replaceWith(res);
        });
    }

【讨论】：

评论不用于扩展讨论；这个对话是moved to chat。