How javascript increases class

In this issue, the editor will bring you about how to increase class in javascript. The article is rich in content and analyzes and narrates it from a professional point of view. I hope you can get something after reading this article.

Javascript add class method: 1, create a p element; 2, through the "document.getelementbyid (" aa ") .classname =" bbbb "; way to add class to the element.

This article operating environment: windows7 system, javascript1.8.5 version, Dell G3 computer.

How does javascript add class?

First let's create a p element and write hello in it:

The display on the browser interface is as follows:

Next, you can add class to the element with js:

After adding it, let's see the results in the browser console:

Is it very simple? after adding, you can use class to dynamically add some styles, which is very convenient, and the styles will be gone after removal.

This is how the javascript shared by the editor increases class. If you happen to have similar doubts, you might as well refer to the above analysis to understand. If you want to know more about it, you are welcome to follow the industry information channel.