MediaWiki:Common.js

Note: After publishing, you may have to bypass your browser's cache to see the changes.

Firefox / Safari: Hold Shift while clicking Reload, or press either Ctrl-F5 or Ctrl-R (⌘-R on a Mac)
Google Chrome: Press Ctrl-Shift-R (⌘-Shift-R on a Mac)
Internet Explorer / Edge: Hold Ctrl while clicking Refresh, or press Ctrl-F5
Opera: Press Ctrl-F5.

/* Any JavaScript here will be loaded for all users on every page load. */

// sidebar background color dynamic changer

var sidebar = document.getElementById('ims-sidebar');
var hue = window.localStorage.getItem('hue'); // color storage

var slider = document.createElement('input');
slider.id = 'sidebar-bg-slider';
slider.type = 'range';
slider.min = "0";
slider.max = "360";
slider.setAttribute('style', 'width: 100%;');

// initial setup on pageload
if (hue) {
  sidebar.setAttribute('style', 'background: hsl(' + hue + ', 30%, 40%);');
  slider.value = hue;
}

var slider_div = document.createElement('div')
slider_div.setAttribute('style', 'margin-top: 1rem;');

var label = document.createElement('h3');
label.innerText = 'Background'
label.setAttribute('style', 'font-size: .5rem; font-weight: 400; letter-spacing: 1.618ex; text-transform: uppercase;');

slider_div.appendChild(label);
slider_div.appendChild(slider);
sidebar.appendChild(slider_div);

slider.addEventListener("change", function (e) {
  window.localStorage.setItem('hue', e.target.value); // to save it on page refreshing
  sidebar.setAttribute('style', 'background: hsl(' + e.target.value + ', 30%, 40%);');
  
});