Javascript + CSS implementation of the classic rounded corner drop-down menu effect code _ javascript skills

This article mainly introduces the code for the classic rounded corner drop-down menu effect implemented by JS + CSS, which can achieve a very classic rounded corner drop-down menu effect and involves techniques related to JavaScript dynamic page element css styles, for more information, see the sample code of corner drop-down menu implemented by JS + CSS. We will share this with you for your reference. The details are as follows:

I believe many of my friends will like this menu. the rounded corner drop-down menu implemented by CSS + JS does not use any decoration Image. the rounded corner is completely completed by JS, as a result, the code is a little more, and the user who wants to use it can extract the JS file and save it as a more reasonable one.

The running effect is as follows:

The online demo address is as follows:

Http://demo.jb51.net/js/2015/js-css-jd-cicle-style-button-demo/

The code is as follows:

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