Shuffle a set of HTML elements with jQuery

Re-arrange the child elements of a given parent element to be in a random order using jQuery.

HTML

<div class="gallery"></div>

CSS

.gallery {
   display: flex;
   flex-wrap: wrap;
}

.img {
  flex: 0 0 20%;
  max-width: 20%;
  height: 0;
  padding-bottom: 20%;
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center;
}

JavaScript

var linksArray = [
  'http://lorempixel.com/400/400/people/1/',
  'http://lorempixel.com/400/400/people/2/',
  'http://lorempixel.com/400/400/people/3/',
  'http://lorempixel.com/400/400/people/4/',
  'http://lorempixel.com/400/400/people/5/',
  'http://lorempixel.com/400/400/people/6/',
  'http://lorempixel.com/400/400/people/7/',
  'http://lorempixel.com/400/400/people/8/',
  'http://lorempixel.com/400/400/people/9/',
  'http://lorempixel.com/400/400/people/10/',
  'http://lorempixel.com/400/400/nightlife/1/',
  'http://lorempixel.com/400/400/nightlife/2/',
  'http://lorempixel.com/400/400/nightlife/3/',
  'http://lorempixel.com/400/400/nightlife/4/',
  'http://lorempixel.com/400/400/nightlife/5/',
  'http://lorempixel.com/400/400/nightlife/6/',
  'http://lorempixel.com/400/400/nightlife/7/',
  'http://lorempixel.com/400/400/nightlife/8/',
  'http://lorempixel.com/400/400/nightlife/9/',
  'http://lorempixel.com/400/400/nightlife/10/',
  'http://lorempixel.com/400/400/nature/1/',
  'http://lorempixel.com/400/400/nature/2/',
  'http://lorempixel.com/400/400/nature/3/',
  'http://lorempixel.com/400/400/nature/4/',
  'http://lorempixel.com/400/400/nature/5/',
  'http://lorempixel.com/400/400/nature/6/',
  'http://lorempixel.com/400/400/nature/7/',
  'http://lorempixel.com/400/400/nature/8/',
  'http://lorempixel.com/400/400/animals/9/',
  'http://lorempixel.com/400/400/nature/10/',
  'http://lorempixel.com/400/400/fashion/1/',
  'http://lorempixel.com/400/400/technics/2/',
  'http://lorempixel.com/400/400/fashion/3/',
  'http://lorempixel.com/400/400/fashion/4/',
  'http://lorempixel.com/400/400/fashion/5/',
  'http://lorempixel.com/400/400/fashion/6/',
  'http://lorempixel.com/400/400/fashion/7/',
  'http://lorempixel.com/400/400/fashion/8/',
  'http://lorempixel.com/400/400/fashion/10/',
  'http://lorempixel.com/400/400/technics/1/',
];

document.addEventListener('DOMContentLoaded', function () {
     var gallery = document.querySelector('.gallery');
     
    ...