Animation effect code not implemented by jQuery

However, with the upgrade of the new version, the volume gradually increases.
24KB, Minified and Gzipped 155KB, Uncompressed Code
Compressed and gzip output 24 K, not small.
If you have a simple effect on the page, a simple animation does not have to load such a large library.
Let's take a look at the gradient effect of the image below. In fact, it can be done in less than 20 lines of pure js.
<Meta content = "text/html; charset = UTF-8 "http-equiv =" Content-Type "/> <style type =" text/css "> </P> <P> body {padding: 0; margin: 0 ;}# main {margin: 50px auto; border: 1px solid # ccc; width: 700px }# main img {padding: 0 20px; border: none; display: none} </style>
[Ctrl + A select all Note: If you need to introduce external Js, You need to refresh it to execute]