JSFiddle - React, Tailwind, and code Playground

HTML

<h2>Klik op mij!</h2>
<p><span class='zoom' id='ex1'>
<span>Hover</span>
<img src='http://www.filmtotaal.nl/images/newscontent/4w7xpgykk7je_full.jpg' width='555' height='320' alt='Daisy on the Ohoopee'>
</span></p>
<hr>

CSS

.zoom {
  display:inline-block;
  position: relative;
}

/* magnifying glass icon */
.zoom:after {
  content:'';
  display:block; 
  width:33px; 
  height:33px; 
  position:absolute; 
  top:0;
  right:0;
  background:url(https://raw.github.com/jackmoore/zoom/master/icon.png);
}
.zoom img {
  display: block;
}
.zoom img::selection { background-color: transparent; }
#ex1 { margin-right:5px; }
#ex2 img:hover { cursor: url(grab.cur), default; }
#ex2 img:active { cursor: url(grabbed.cur), default; }
#ex1 span, #ex2 span { position:absolute; top:3px; right:28px; color:#555; font:bold 13px/1 sans-serif; }

JavaScript

/*!
	Zoom v1.7.12 - 2014-02-12
	Enlarge images on click or mouseover.
	(c) 2014 Jack Moore - http://www.jacklmoore.com/zoom
	license: http://www.opensource.org/licenses/mit-license.php
*/
(function ($) {
	var defaults = {
		url: false,
		callback: false,
		target: false,
		duration: 120,
		on: 'mouseover', // other options: grab, click, toggle
		touch: true, // enables a touch fallback
		onZoomIn: false,
		onZoomOut: false,
		magnify: 1
	};

	// Core Zoom Logic, independent of event listeners.
	$.zoom = function(target, source, img, magnify) {
		var targetHeight,
			targetWidth,
			sourceHeight,
			sourceWidth,
			xRatio,
			yRatio,
			offset,
			position = $(target).css('position');

		// The parent element needs positioning so that the zoomed element can be correctly positioned within.
		$(target).css({
			position: /(absolute|fixed)/.test(position) ? position : 'relative',
			overflow: 'hidden'
		});

		img.style.width = img.style.height = '';

		$(img)
			.addClass('zoomImg')
			.css({
				position: 'absolute',
				top: 0,
				left: 0,
				opacity: 0,
				width: img.width * magnify,
				height: img.height * magnify,
				border: 'none',
				maxWidth: 'none',
				maxHeight: 'none'
			})
			.appendTo(target);

		return {
			init: function() {
				targetWidth = $(target).outerWidth();
				targetHeight = $(target).outerHeight();

				if (source === target) {
					sourceWidth = targetWidth;
					sourceHeight = targetHeight;
				} else {
					sourceWidth = $(source).outerWidth();
					sourceHeight = $(source).outerHeight();
				}

				xRatio = (img.width - targetWidth) / sourceWidth;
				yRatio = (img.height - targetHeight) / sourceHeight;

				offset = $(source).offset();
			},
			move: function (e) {
				var left = (e.pageX - offset.left),
					top = (e.pageY - offset.top);

				top = Math.max(Math.min(top, sourceHeight), 0);
				left = Math.max(Math.min(left, sourceWidth), 0);

				img.style.left = (left * -xRatio) + 'px';
				img.style.top = (top * -yRatio) +...