The back-to-top feature is malfunctioning in the new Bootstrap 4 update

Question

The back-to-top feature is malfunctioning in the new Bootstrap 4 update

I've been working on adding a back-to-top button to my website using JavaScript in Bootstrap 4 with the Font Awesome icon set. It was functioning perfectly until I made some changes to the site, and now it's not working anymore. I'm pretty new to JavaScript and can't figure out what went wrong...

This is the code I have:

$(document).ready(function() {
        $(window).scroll(function() {
          if ($(this).scrollTop() > 50) {
            $('#back-to-top').fadeIn();
          } else {
            $('#back-to-top').fadeOut();
          }
        });
        
        $('#back-to-top').click(function() {
          $('body,html').animate({
            scrollTop: 0
          }, 400);
          return false;
        });
      });

.back-to-top {
    position: fixed;
    bottom: 25px;
    right: 25px;
    display: none;
}

<link href="//netdna.bootstrapcdn.com/twitter-bootstrap/2.3.2/css/bootstrap-combined.no-icons.min.css" rel="stylesheet">
<link href="//netdna.bootstrapcdn.com/font-awesome/3.2.1/css/font-awesome.css" rel="stylesheet>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div style="height:100rem;">test</div>
<a id="back-to-top" href="#" class="mr-m2b btn btn-primary btn-lg back-to-top" role="button">TOP<i class="fas fa-chevron-up"></i></a>

It used to work flawlessly until something caused it to stop working. The JavaScript seems to be the issue as it's not doing much, but I'm unsure why. Why did it work before without any changes to the function?!

Edit: I recently removed a custom scrollbar

body::-webkit-scrollbar {
  width: 1em;
}

body::-webkit-scrollbar-track {
  box-shadow: inset 0 0 6px rgba(0, 0, 0, 0.3);
}

body::-webkit-scrollbar-thumb {
  background-color: #A1394F;
  outline: 1px solid slategrey;
}

Adding the deleted scrollbar back didn't solve the issue either. The same JavaScript code works fine here, but not on my HTML page... What am I overlooking?

javascript html css bootstrap-4

Answer 1

Answer №1

If your code isn't functioning as expected in your project, you can try the following solution:

Instead of using "body, html" or creating an id for the body element like <body id="top">, modify your JavaScript to target the newly created id like so:

document.querySelector('#top').scrollIntoView({ behavior: 'smooth' });

For a smoother scrolling experience, you can also explore this resource:

JavaScript

// Scroll to Top
$(document).ready(function(){

    // Check if window is scrolled past a certain point and display button
    $(window).scroll(function(){
        if ($(this).scrollTop() > 800) {
            $('#back-to-top').fadeIn();
        } else {
            $('#back-to-top').fadeOut();
        }
    });

      // Scroll to top functionality
      document.querySelector('.back-to-top').addEventListener('click', function(e) {
        e.preventDefault();
        document.querySelector('body').scrollIntoView({ behavior: 'smooth' });
      });

});

Answer 2

If your code isn't functioning as expected in your project, you can try the following solution:

Instead of using "body, html" or creating an id for the body element like <body id="top">, modify your JavaScript to target the newly created id like so:

document.querySelector('#top').scrollIntoView({ behavior: 'smooth' });

For a smoother scrolling experience, you can also explore this resource:

JavaScript

// Scroll to Top
$(document).ready(function(){

    // Check if window is scrolled past a certain point and display button
    $(window).scroll(function(){
        if ($(this).scrollTop() > 800) {
            $('#back-to-top').fadeIn();
        } else {
            $('#back-to-top').fadeOut();
        }
    });

      // Scroll to top functionality
      document.querySelector('.back-to-top').addEventListener('click', function(e) {
        e.preventDefault();
        document.querySelector('body').scrollIntoView({ behavior: 'smooth' });
      });

});

Answer 3

Answer №2

After encountering an issue, I was able to resolve it by simply re-copying the JavaScript script and pasting it at the end of the body section. The root cause of the problem turned out to be related to the incorrect import order rather than any issues with the code or versions being used. Surprisingly enough, ensuring that Jquery 3.3, 3.4, and 3.5 all function properly comes down to having the correct import order in place.

<script src="{% static 'jquery-3.5.1.min.js' %}"></script>
<script src="{% static 'popper1.16.min.js' %}"></script>
<script src="{% static 'js/bootstrap.min.js' %}"></script>
<script type="text/javascript">
  $(document).ready(function() {
    $(window).scroll(function() {
      if ($(this).scrollTop() > 50) {
        $('#back-to-top').fadeIn();
      } else {
        $('#back-to-top').fadeOut();
      }
    });
    // scroll body to 0px on click
    $('#back-to-top').click(function() {
      $('body,html').animate({
        scrollTop: 0
      }, 400);
      return false;
    });
  });
</script>

Answer 4

After encountering an issue, I was able to resolve it by simply re-copying the JavaScript script and pasting it at the end of the body section. The root cause of the problem turned out to be related to the incorrect import order rather than any issues with the code or versions being used. Surprisingly enough, ensuring that Jquery 3.3, 3.4, and 3.5 all function properly comes down to having the correct import order in place.

<script src="{% static 'jquery-3.5.1.min.js' %}"></script>
<script src="{% static 'popper1.16.min.js' %}"></script>
<script src="{% static 'js/bootstrap.min.js' %}"></script>
<script type="text/javascript">
  $(document).ready(function() {
    $(window).scroll(function() {
      if ($(this).scrollTop() > 50) {
        $('#back-to-top').fadeIn();
      } else {
        $('#back-to-top').fadeOut();
      }
    });
    // scroll body to 0px on click
    $('#back-to-top').click(function() {
      $('body,html').animate({
        scrollTop: 0
      }, 400);
      return false;
    });
  });
</script>

The back-to-top feature is malfunctioning in the new Bootstrap 4 update

Answer №1

Answer №2

Similar questions

Transform the elements of a tensor in TensorFlow into a standard JavaScript array

The method for retrieving and entering a user's phone number into a text field upon their visit

Deselecting checkboxes inside a specific div using jQuery when a separate checkbox is clicked

"Reacting to click events, all buttons have been successfully updated in ReactJS

Issues with functionality of Bootstrap carousel slider

Guide on setting up JSME, a chemistry portal integrated with JavaScript, within vuejs

Learn how to divide a container div with multiple sub-divs into two columns using CSS

Detecting changes to DOM elements without using jQueryResponding to DOM element

Css animations not functioning properly in Chrome

Instructions for inserting an anchor tag into the middle of a <p> element utilizing document.createElement("p")

Unexpected results: jQuery getJSON function failing to deliver a response

Understanding the performance of video in threejs when using getImageData

Working with an array of object in Vuex for form handling

What is the best way to extract the name from JSON data?

The functionality of multiple UI-Views is not meeting the intended outcomes

Is there a way to modify the automatic zoom feature in Bootstrap 4 Carousel that adjusts the image to fit a certain section?

Are there any npm modules available that can efficiently transform unstructured information into a CSV format?

CURL is spitting out garbage data

PHP encountering a bad escaped character while parsing JSON using JSON.parse

Apple's iPhone does not adhere to media query specifications