Preload an image into browser cache (but not the DOM)

imgPreload.js

function preload(arrayOfImages) {
    $(arrayOfImages).each(function(){
      (new Image()).src = this;
    });
}

// Usage:

preload([
    'img/imageName.jpg',
    'img/anotherOne.jpg',
    'img/blahblahblah.jpg'
]);