iScroll 4 Helper Code Snippets

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I’ve been using the iScroll 4 plugin for a while now, it’s pretty nifty. I use it for getting touch friendly scrollbars happening – great plugin. If I get time I’ll code an extension API for it & code some demos if there is enough interest. But for now here is some code snippets.

//settings for snippets below
var scrollName = 'myScroll',
     scrollDuration = 1000,
    scrollAmount = 200;
Setup scroll with end scroll callback.
//setup scroll with end scroll callback
window[scrollName] = new iScroll(scrollName, {
    onScrollEnd: function() {
        //do something on end of scrolling

Check scroll is at top of content.
//Check scroll is at top of content
window.scrollName.y < 0
Check scroll is at bottom of content.
//Check scroll is at bottom of content
window.scrollName.y == window.maxScrollY
Scroll to top of content.
//scroll to top of content

Relative scrolling up.
//relative scrolling up
Relative scrolling down.
//relative scrolling down
//initialise scroll on a bootstrap modal window if it doesn’t exist
if (!window[scrollName].wrapper) {
    //it needs to be visible for it to work...
        console.log('modal iscroll...');
        window[scrollName] = new iScroll(scrollName);
    }, 10);

Frequently Asked Questions (FAQs) about iScroll and Scrollend Event

What is the main difference between iScroll and the Scrollend event?

iScroll is a high-performance, small footprint, dependency-free, multi-platform JavaScript scroller. It works on desktop, mobile, and smart TV. It has been designed to handle different types of events and is highly customizable. On the other hand, the Scrollend event is a more specific event that is fired when a scroll action completes. It is a part of the Web API and is not as customizable as iScroll.

How can I use iScroll in my project?

To use iScroll in your project, you need to include the iScroll JavaScript file in your HTML file. After that, you can initialize a new iScroll instance by calling the iScroll constructor with the ID of the element you want to make scrollable. You can also pass in an options object to customize the behavior of the scroller.

Can I use iScroll with React or other JavaScript frameworks?

Yes, iScroll can be used with any JavaScript framework, including React, Angular, Vue, etc. You just need to make sure to initialize the iScroll instance after the DOM has been rendered by the framework.

How can I listen for the Scrollend event?

You can listen for the Scrollend event by using the addEventListener method on the element you want to monitor. The event listener function will be called whenever a scroll action completes on that element.

Can I customize the behavior of the Scrollend event?

The Scrollend event itself cannot be customized as it is a part of the Web API. However, you can customize what happens when the event is fired by defining your own event listener function.

What are some common use cases for iScroll?

iScroll can be used in a variety of situations where you need a customizable, high-performance scroller. Some common use cases include mobile web applications, single-page applications, and web-based games.

What are some common use cases for the Scrollend event?

The Scrollend event is commonly used in situations where you need to know when a scroll action has completed. This can be useful for things like lazy loading of content, infinite scrolling, or triggering animations based on scroll position.

Are there any known issues or limitations with iScroll?

iScroll is a mature and well-maintained library, but like any software, it may have some issues or limitations. These are usually documented in the project’s GitHub repository.

Are there any known issues or limitations with the Scrollend event?

The Scrollend event is a part of the Web API, so its behavior should be consistent across all modern browsers. However, there may be some differences in how it is implemented in older browsers.

Where can I find more information about iScroll and the Scrollend event?

You can find more information about iScroll on its official website and GitHub repository. For more information about the Scrollend event, you can refer to the Mozilla Developer Network (MDN) Web Docs.

Sam DeeringSam Deering
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Sam Deering has 15+ years of programming and website development experience. He was a website consultant at Console, ABC News, Flight Centre, Sapient Nitro, and the QLD Government and runs a tech blog with over 1 million views per month. Currently, Sam is the Founder of Crypto News, Australia.

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