scroll 4 helper code snippets

I have been using the iScroll 4 plugin and it is very good. I use it to implement touch-friendly scrollbars – a great plugin. If I have time, I will write an extension API for it and write some demos (if the interest is big enough). But now, here are some code snippets.

<code class="language-javascript">// 下面代码片段的设置
var scrollName = 'myScroll',
     scrollDuration = 1000,
    scrollAmount = 200;</code>

Set scrolling with scroll end callback function.

<code class="language-javascript">// 设置滚动并带有滚动结束回调函数
window[scrollName] = new iScroll(scrollName, {
    onScrollEnd: function() {
        console.log('onScrollEnd');
        // 在滚动结束时执行某些操作
    }
});</code>

Check if scrolling is at the top of the content.

<code class="language-javascript">// 检查滚动是否位于内容顶部
window[scrollName].y</code>

Check if the scrolling is at the bottom of the content.

<code class="language-javascript">// 检查滚动是否位于内容底部
window[scrollName].y == window[scrollName].maxScrollY</code>

Scroll to the top of the content.

<code class="language-javascript">// 滚动到内容顶部
window[scrollName].scrollTo(0, 0, scrollDuration);

// 或
window[scrollName].scrollTo(0, 0);</code>

Scroll relative upward.

<code class="language-javascript">// 相对向上滚动
window[scrollName].scrollTo(0, '-'+scrollAmount, scrollDuration, true);</code>

Scroll down relative to each other.

<code class="language-javascript">// 相对向下滚动
window[scrollName].scrollTo(0, scrollAmount, scrollDuration, true);</code>

// If not, initialize scrolling on the Bootstrap modal window

<code class="language-javascript">if (!window[scrollName].wrapper) {
    // 它需要可见才能工作...
    setTimeout(function() {
        console.log('modal iscroll...');
        console.log(scrollName);
        window[scrollName] = new iScroll(scrollName);
    }, 10);
}</code>

FAQ for iScroll and scroll end events (FAQ)

What is the main difference between iScroll and scroll end events?

iScroll is a high-performance, small space-consuming, dependency-free, multi-platform JavaScript scroller. It runs on desktops, mobile devices and smart TVs. It is designed to handle different types of events and is highly customizable. On the other hand, the scroll end event is a more specific event that is triggered after the scroll operation is completed. It is part of the Web API and is not as customizable as iScroll.

How to use iScroll in my project?

To use iScroll in your project, you need to include the iScroll JavaScript file in the HTML file. After that, the new iScroll instance can be initialized by calling the iScroll constructor with the ID of the element to be scrollable. You can also pass in an option object to customize the scroller's behavior.

Can I use iScroll with React or other JavaScript frameworks?

Yes, iScroll can be used with any JavaScript framework, including React, Angular, Vue, etc. Just make sure that the iScroll instance is initialized after the framework renders the DOM.

How to listen for scroll end events?

You can use the addEventListener method on the element you want to monitor to listen for scroll end events. The event listener function is called whenever a scrolling operation is completed on this element.

Can I customize the behavior of the scroll end event?

The scroll end event itself cannot be customized because it is part of the Web API. However, you can customize what happens when an event is triggered by defining your own event listener function.

What are some common use cases of iScroll?

iScroll can be used in a variety of situations when customizable, high-performance rollers are needed. Some common use cases include mobile web applications, single page applications, and web-based games.

What are some common use cases for scroll end events?

The scroll end event is usually used when you need to know when the scrolling operation is completed. This is useful for delayed loading of content, infinite scrolling, or triggering animations based on scroll position.

What are the known issues or limitations of iScroll?

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

What are the known issues or limitations for the scroll end event?

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

Where can I find more information about iScroll and scroll end events?

More information about iScroll can be found on its official website and on the GitHub repository. For more information about the end of scroll events, please refer to the Mozilla Developer Network (MDN) web documentation.

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