javascript - Function to preload images? - Stack Overflow

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I'm successfully pre-loading an image on my website with this JavaScript:

loveHover = new Image();
loveHover.src = ".png";

Is there an easy an good way to pack this thing into a function? Something like:

function preloadImage(image) {
    var image = new Image();
    var path = "/";
    image.src = path + image;
}

I'm successfully pre-loading an image on my website with this JavaScript:

loveHover = new Image();
loveHover.src = "http://mypage./images/love-hover.png";

Is there an easy an good way to pack this thing into a function? Something like:

function preloadImage(image) {
    var image = new Image();
    var path = "http://mypage./images/";
    image.src = path + image;
}

• javascript
• preload

Share Improve this question Follow edited Jan 9, 2013 at 18:05 KatieK 13.9k1919 gold badges7878 silver badges9191 bronze badges asked Mar 8, 2011 at 16:09 mattmatt 44.5k107107 gold badges268268 silver badges402402 bronze badges 0

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3 Answers 3

Sorted by: Reset to default 3

["love-hover.jpg", "like-hover.jpg", "hate-hover.jpg"].forEach(function(img)
{
    new Image().src = "http://mypage./" + img;
});

To get this to work in IE versions earlier than 9, see the Array.forEach Compatibility section for instructions.

Well the unique part of the function would be the src (link to image). So make that the argument.

function preloadImage(src) {
    var image = new Image();
    image.src = src;
}

Then if you have multiple urls store them in an array:

var imageSrcs = [
    "http://mypage./images/love-hover.png#",
    "http://mypage./images/love-hover2.png",
    "http://mypage./images/love-hover3.png"
];

And preload the images with a loop:

for (var i = 0; i < imageSrcs.lengthl i++)
    preloadImage(imageSrcs[i]);

Have you tried not using javascript at all?

http://perishablepress./press/2008/06/14/a-way-to-preload-images-without-javascript-that-is-so-much-better/

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