Icon library

Instructions:

Include the script

<script src="pathTo/ttIcons.js"></script>

Add an element with a tt-icon-picker class
In this element, add a data-controls attribute with the id of the input that should have it´s value controlled by this button

<button class="tt-icon-picker" data-controls="icon-category" ></button>

Add and input with the same id of the data-controls value

<input type="hidden" id="icon-category"></input>

Sample: