diff options
Diffstat (limited to '_includes/scripts/utils/imagesLoad.js')
-rw-r--r-- | _includes/scripts/utils/imagesLoad.js | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/_includes/scripts/utils/imagesLoad.js b/_includes/scripts/utils/imagesLoad.js new file mode 100644 index 0000000..63a6bdf --- /dev/null +++ b/_includes/scripts/utils/imagesLoad.js @@ -0,0 +1,28 @@ +(function() { + window.imagesLoad = function(images) { + images = images || document.getElementsByTagName('img'); + var imagesCount = images.length, loadedCount = 0, image; + var i, j, loaded = false, cbs = []; + imagesCount < 1 && (loaded = true); + for (i = 0; i < imagesCount; i++) { + image = images[i]; + image.complete ? handleImageLoad() : image.addEventListener('load', handleImageLoad); + } + function handleImageLoad() { + loadedCount++; + if (loadedCount === imagesCount) { + loaded = true; + if (cbs.length > 0) { + for (j = 0; j < cbs.length; j++) { + cbs[j](); + } + } + } + } + return { + then: function(cb) { + cb && (loaded ? cb() : (cbs.push(cb))); + } + }; + }; +})(); |