How to implement a simple progress bar effect in html5? Implementation of dynamic progress bar (code example)

When browsing a website, you often encounter page loading. At this time, a dynamic progress bar will appear on the page, which will continue to scroll until the loading is completed. So how is such a dynamic progress bar implemented? This article will introduce to you how to implement a simple dynamic progress bar effect in HTML5, and share with you the code for scrolling loading of the dynamic progress bar on the page. Interested friends can refer to it. I hope it will be helpful to you.

First of all, let’s take a look at the principle of HTML5 to achieve a simple dynamic progress bar effect.

The powerful HTML5 provides us with a new tag . This tag can achieve a static progress bar effect (as shown below), and then by adding simple js code, we can achieve it Progress bar scrolling effect.

# Below we use a simple code example to introduce how to implement dynamic progress bars in HTML5.

html5 code:

<progress max="100" value="0" id="pg"></progress>

The use of the tag is very simple, the meaning is very clear, and there are only the above two attributes, max represents the amount of tasks that need to be completed, and value is the current completion Task volume (see the picture above for the style).

js code:

var pg=document.getElementById('pg'); 
setInterval(function(e){
   if(pg.value!=100) pg.value++;      
   else pg.value=0;
},100);

Rendering:

The above implementation is not only simpler and more semantic, At the same time, it also greatly simplifies our code and makes it more flexible, so it is very necessary to use HTML5 proficiently!

However, the browser support of the html5 tag is also an issue we need to consider. Let’s take a look at the browser support of the tag.

Summary: The above is the method of implementing a simple progress bar effect in html5 js introduced in this article. You can try it yourself. I hope it can help everyone's learning. help.

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