JSFiddle - React, Tailwind, and code Playground

by Amitabha Ghosh

HTML

<a href="#"><img src="http://lorempixel.com/200/200"></a>
<a href="#"><img src="http://lorempixel.com/200/200"></a>

CSS

img {
  filter: url("data:image/svg+xml;utf8,<svg xmlns=\'http://www.w3.org/2000/svg\'><filter id=\'grayscale\'><feColorMatrix type=\'matrix\' values=\'0.3333 0.3333 0.3333 0 0 0.3333 0.3333 0.3333 0 0 0.3333 0.3333 0.3333 0 0 0 0 0 1 0\'/></filter></svg>#grayscale"); /* Firefox 3.5+ */
  filter: gray; /* IE6-9 */
  -webkit-filter: grayscale(100%); /* Chrome 19+ & Safari 6+ */
}

a:hover img,
a:focus img,
a.active img {
    filter: none;
    -webkit-filter: grayscale(0%);
}

JavaScript

$("a").click(function(){
    $("a").removeClass("active");
    $(this).addClass("active");
});