How to implement a folding menu in JavaScript

How to implement a folding menu in JavaScript: 1. Create an HTML sample file and define the menu div; 2. Add a script tag; 3. Pass "$(document).ready(function(){show(1.6) ...}" can be folded on the left side.

The operating environment of this article: windows7 system, javascript version 1.8.5, Dell G3 computer.

How to implement folding menu in JavaScript?

js implements menu folding function

##Menu expansion effect:

Menu collapse effect:

Source code

javascript basic tutorial"

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