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Asynchronous image background loading

by tonytlwu

HTML

<pre id="debug"></pre>

JavaScript

var img = new Image();
img.addEventListener('load', function(){
	document.querySelector('#debug').innerHTML = 'Loaded!';
}, false);
img.src = 'https://upload.wikimedia.org/wikipedia/commons/4/4e/Pleiades_large.jpg?_=' + new Date().getTime();
document.querySelector('#debug').innerHTML = 'Loading...';