多步骤表单Next按钮在CodePen可用但Django环境失效求助

我有一个多步骤表单的Next按钮，本该切换到下一个fieldset，这个功能在CodePen中正常可用，但在我的Django 4.2.3项目（VSCode环境）中失效。之前有用户遇到同类问题，解决方案是添加jQuery CDN，但这个方法对我没用，而且控制台没有报错信息。我已经尝试更换不同版本的jQuery，以下是我的代码：

HTML代码 #

<!-- multistep form -->
{%load static%}


<head>
  <!-- ... your other links and scripts ... -->

  <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery-easing/1.3/jquery.easing.min.js"></script>
  <script src="{% static 'assets/js/profile_completion.js' %}"></script>
  <link rel="stylesheet" href="{% static 'assets/css/profile_completion.css' %}">
</head>

<body>
  <form id="msform">
    <!-- progressbar -->
    <ul id="progressbar">
      <li class="active">Account Setup</li>
      <li>Social Profiles</li>
      <li>Personal Details</li>
    </ul>
    <!-- fieldsets -->
    <fieldset>
      <h2 class="fs-title">Create your account</h2>
      <h3 class="fs-subtitle">This is step 1</h3>
      <input type="text" name="email" placeholder="Email" />
      <input type="password" name="pass" placeholder="Password" />
      <input type="password" name="cpass" placeholder="Confirm Password" />
      <input type="button" name="next" class="next action-button" value="Next" />
    </fieldset>
    <fieldset>
      <h2 class="fs-title">Social Profiles</h2>
      <h3 class="fs-subtitle">Your presence on the social network</h3>
      <input type="text" name="twitter" placeholder="Twitter" />
      <input type="text" name="facebook" placeholder="Facebook" />
      <input type="text" name="gplus" placeholder="Google Plus" />
      <input type="button" name="previous" class="previous action-button" value="Previous" />
      <input type="button" name="next" class="next action-button" value="Next" />
    </fieldset>
    <fieldset>
      <h2 class="fs-title">Personal Details</h2>
      <h3 class="fs-subtitle">We will never sell it</h3>
      <input type="text" name="fname" placeholder="First Name" />
      <input type="text" name="lname" placeholder="Last Name" />
      <input type="text" name="phone" placeholder="Phone" />
      <textarea name="address" placeholder="Address"></textarea>
      <input type="button" name="previous" class="previous action-button" value="Previous" />
      <a href="https://twitter.com/GoktepeAtakan" class="submit action-button" target="_top">Submit</a>
    </fieldset>
  </form>
</body>

JavaScript代码 #

//jQuery time
var current_fs, next_fs, previous_fs; //fieldsets
var left, opacity, scale; //fieldset properties which we will animate
var animating; //flag to prevent quick multi-click glitches

$(".next").click(function(){
    if(animating) return false;
    animating = true;
    
    current_fs = $(this).parent();
    next_fs = $(this).parent().next();
    
    //activate next step on progressbar using the index of next_fs
    $("#progressbar li").eq($("fieldset").index(next_fs)).addClass("active");
    
    //show the next fieldset
    next_fs.show(); 
    //hide the current fieldset with style
    current_fs.animate({opacity: 0}, {
        step: function(now, mx) {
            //as the opacity of current_fs reduces to 0 - stored in "now"
            //1. scale current_fs down to 80%
            scale = 1 - (1 - now) * 0.2;
            //2. bring next_fs from the right(50%)
            left = (now * 50)+"%";
            //3. increase opacity of next_fs to 1 as it moves in
            opacity = 1 - now;
            current_fs.css({
        'transform': 'scale('+scale+')',
        'position': 'absolute'
      });
            next_fs.css({'left': left, 'opacity': opacity});
        }, 
        duration: 800, 
        complete: function(){
            current_fs.hide();
            animating = false;
        }, 
        //this comes from the custom easing plugin
        easing: 'easeInOutBack'
    });
});

$(".previous").click(function(){
    if(animating) return false;
    animating = true;
    
    current_fs = $(this).parent();
    previous_fs = $(this).parent().prev();
    
    //de-activate current step on progressbar
    $("#progressbar li").eq($("fieldset").index(current_fs)).removeClass("active");
    
    //show the previous fieldset
    previous_fs.show(); 
    //hide the current fieldset with style
    current_fs.animate({opacity: 0}, {
        step: function(now, mx) {
            //as the opacity of current_fs reduces to 0 - stored in "now"
            //1. scale previous_fs from 80% to 100%
            scale = 0.8 + (1 - now) * 0.2;
            //2. take current_fs to the right(50%) - from 0%
            left = ((1-now) * 50)+"%";
            //3. increase opacity of previous_fs to 1 as it moves in
            opacity = 1 - now;
            current_fs.css({'left': left});
            previous_fs.css({'transform': 'scale('+scale+')', 'opacity': opacity});
        }, 
        duration: 800, 
        complete: function(){
            current_fs.hide();
            animating = false;
        }, 
        //this comes from the custom easing plugin
        easing: 'easeInOutBack'
    });
});

内容的提问来源于stack exchange，提问作者Dillon Bishop