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Browser Compatible Smooth Scrolling with CSS, JS & JQuery
Posted On: June 11, 2020
4 Min Read
Have you ever noticed how a scroll works on a webpage? What if you are not allowed to touch the mouse or the arrow keys on the keyboard. How would you scroll then? If you happen to have pressed the space key while navigating a page, you’d have noticed that it scrolls down a page, welcome to the club! But in addition to that, there is another way to scroll the page of the website using a dedicated key on the keyboard. Yes, the PgDn (Page Down) key. Now, before reading the post and what we are about to discuss, scroll this page using the page down key and notice if there’s an abrupt pattern (sudden jump).
Scrolling is a commonly used feature on computers. Even without the mouse, there are still a lot of users who rely on the keyboard for scrolling. These users include the readers, editors, and other people who tend to read a lot. As a web developer, you must have coded or noticed a link on the webpage that takes you to another section on the web page by giving the id of that element as href in the anchor tag. It is so instant that the “scrolling” part is quite abrupt.
TABLE OF CONTENT
- What Is Smooth Scrolling?
- How To Create Smooth Scroll With CSS?
- How To Create Smooth Scroll With JS?
- How To Create Smooth Scroll With JQuery?
What Is Smooth Scrolling?
Smooth scrolling is exactly what its name literally suggests i.e. scrolling smoothly on the webpage. As a default scroll behavior, the scroll is very abrupt and sudden but when the smooth scrolling is active on a web page, the web page scrolls down gradually which eases out the efforts by the readers who read a long web page. Let’s see a small demo difference between normal scrolling and smooth scrolling:
The above image uses id as the navigation link for the same page to demonstrate how the page moves when clicked on the link.
If I change the scrolling to smooth, the image would look like this:
Doesn’t it look more graceful and a good choice that a user might prefer?
How To Create Smooth Scroll With CSS?
CSS provides us a standard property to make a page that scrolls smoothly. This property is called “smooth-behavior”.
The smooth-behavior property for Smooth Scroll in CSS takes four values:
The auto value of smooth-behavior in CSS is the default value of the scroll-behavior which is the direct jump from one element to another.
The smooth value of smooth-behavior for Smooth Scroll in CSS changes the element’s scroll behavior from a direct jump to a smooth transition from one element to another. This was shown in the above image.
The initial is the reserved keyword for Smooth Scroll in CSS and not a value specific to scroll-behavior. The initial value sets the default behavior of a property like color, align, etc. In this case, initial and auto will behave in the same way as the auto is the default behavior.
The inherent value inherits the value from the parent element.
To apply smooth scroll with CSS, you need to mention one single line on the element you are trying to scroll smoothly.
The following piece of code will help:
This corresponds to the following effect:
Browser Support For Scroll-Behavior
The browser support for the CSS scroll-behavior property is as follows on CanIUse.
As you can see that this property is not browser compatible with all the major browsers, Surprisingly, the scroll-behavior property is poorly supported with Apple still not ready to incorporate this in their browsers. Scroll-behavior being an important property needs a turnaround method to implement in the browsers where it is not supported and help to build a website that works better across different browsers.
To ensure the compatibility of this property with any major browsers, you can perform browser compatibility testing with LambdaTest and ensure that the property works on the browser as intended. LambdaTest offers 3000+ real browsers and devices, you can perform live testing on these browsers to ensure compatibility of the scroll-behavior feature on the browsers you want to target. In case you want to read up more on browser compatibility testing of CSS writing mode, you can refer to our article on the topic.
In order to get better control over the smooth scroll and better cross browser support, you can opt for a smooth scroll with JS or Jquery method to come to the rescue.
How To Create Smooth Scroll With JS?
This function can be declared for smooth scroll in JS in two ways:
- window.scrollTo(x-coord, y-coord);
The x-coord parameter defines the pixel value in the horizontal direction to which the page needs to be scrolled.
The y-coord parameter defines the pixel value in the vertical direction to which the page needs to be scrolled.
The options field depends on the developer. This field is a dictionary parameter that contains a set of options or parameters defining the characteristics of the smooth scroll with JS. To remember this as a stepwise process, we perform the following process to achieve smooth scrolling with JS:
- Detect the element you want to connect scrolling to.
- Define how much you want to scroll the page.
- Trigger the scrolling property within the function.
If you remember these three steps, scrolling smoothly is a very easy part when it comes to the code. But, before taking reference from this code, ensure that you have deleted the following CSS line from the webpage given in the previous section code:
scroll-behavior : smooth;
In the code given in the previous section, add the following code for smooth scroll in JS inside the page at any place:
Now we can relate the code with the steps that I wrote above:
Detecting The Element:
const navlink = document.querySelectorAll(".navbar a");
navlink.forEach(elem => elem.addEventListener("click", smoothscroll));
In this code for smooth scroll with JS, I am selecting the elements with the class navbar and anchor tags that are within that class. Whenever you click such elements, a function will be triggered with the name smoothscroll.
Define How Much To Scroll:
In the function smoothscroll, I am defining the pixel value that needs to be scrolled. Since, this cannot be an absolute value, you can make use of the offsetTop function. So, this line returns the offset value for the element being referred to.
Trigger The Scrolling Property Within The function:
With this code, you can trigger the property behavior and set it’s value to “smooth”. This means that you want to scroll smoothly.
How To Create Smooth Scroll With JQuery?
Before referring to the following code for a smooth scroll in Jquery, make sure you have no other code that influences the scrolling behavior of the web page.
Now perform live interactive jQuery mobile testing of your jQuery Mobile websites on LambdaTest.
Taking this snippet and connecting back to the steps I mentioned above, we get the following:
Detect The Element
$(".navbar a").on('click', function(event)
In this code, I am selecting all the anchor tags located within the class named navbar. For all such elements, a function will be triggered when they are clicked.
Define How Much To Scroll
The above code for smooth scroll in Jquery calculates the offset of the attribute with “hash” and returns the pixel value back.
The value 1300 refers to the time in milliseconds that I want the web page to take before reaching the target location i.e.
This code for smooth scroll in Jquery generates the following output:
Wrapping It Up!
If Opera and Safari are not in your browser matrix and you don’t need more control over the scroll event, you can use the smooth scroll with the CSS method. But that is hardly the case. Every web developer wants to target a maximum audience and therefore I recommend using a smooth scroll with JS method, as it is simple and gives more control although smooth scroll with JQuery offers some more features on the plate.
You can use any of them as per your comfort level. Whatever the developer decides, it is always better to have a smooth scroll on your website. I have never seen a dissatisfied customer using the smooth-scroll property. So, it is better to learn than skip this property on your web page. Also, make sure that you perform cross browser testing over your browser matrix to ensure browser compatibility support of the feature.
If you have used something unique with scroll property, do comment below to help all the fellow developers learn and experiment more. I hope you liked this article on a smooth scroll with Jquery, JS, and CSS. Feel free to share this article with your peers on Twitter, LinkedIn, or any other social media of your choice. That’s all for now. Happy Testing!!!?
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