vurghusm

isiaToTop plugin is based on the isiaToTop js plugin available at: 
<a href="https://github.com/vurghus-minar/isiaToTop" rel="nofollow ugc">https://github.com/vurghus-minar/isiaToTop</a>
You can check out the Codepen demo here: 
<a href="https://codepen.io/vurghusm/pen/NZqGxb" rel="nofollow ugc">https://codepen.io/vurghusm/pen/NZqGxb</a>
It is mobile friendly and fully customizable.
Contribution, feedback, issue reporting, and comments are welcomed via the github.
<h3>Overriding defaults css and js</h3>
<ol>
<li>To override the <code>css</code> and <code>js</code> files, create a <code>config-isiatotop</code> folder in your theme or child theme.</li>
<li>
Copy the <code>css</code> and <code>js</code> folders located in the <code>isiatotop/assets/public</code> directory to the <code>config-isiatotop</code> and override files there.
The directory structure should look like this. 
–themes 
—->your_theme or child_theme 
——>config-isiatotop 
——–>css 
———->custom.css 
——–>js 
———->init.js
</li>
</ol>

isiaToTop

A versatile and mobile friendly 'scroll to top' plugin based on isiaToTop.

fractal512

Fully adjustable scroll to top tool for your site. Now with SVG icons! 
Easily adapts to any theme. You can change type (button or sidebar), size, shape, icon, color and much more. Dynamically binds to the page and, thus, does not affect SEO. This plugin uses Color Picker jQuery plugin for easy way to change colors of Your button or sidebar. Tested in browsers: Internet Explorer 7 – 11, Microsoft Edge, Safari, Google Chrome, Mozilla Firefox and Opera.
Features:
<ul>
<li>type of scroll tool (button or sidebar);</li>
<li>size and position of the tool;</li>
<li>colors of the button/sidebar;</li>
<li>disable for small mobile screens option;</li>
<li>animated scroll motion option;</li>
<li>translucency of the tool option;</li>
<li>scroll down to the last viewed position option.</li>
</ul>

Scroll tool

Fully adjustable scroll tool for your site.

isiaToTop vs Scroll tool