Forked from periscopesnippets/jQuery: Image Preloader
Last active
August 29, 2015 14:10
-
-
Save Yvelious/227e862200ba4bdb7330 to your computer and use it in GitHub Desktop.
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| $.fn.preloader = function (options) { | |
| var defaults = { | |
| delay: 200, | |
| preload_parent: "", | |
| check_timer: 300, | |
| ondone: function () {}, | |
| oneachload: function (image) {}, | |
| fadein: 500 | |
| }; | |
| // variables declaration and precaching images and parent container | |
| var options = $.extend(defaults, options), | |
| root = $(this), | |
| images = root.find("img") | |
| .css({ | |
| "visibility": "hidden", | |
| opacity: 0 | |
| }), | |
| timer, counter = 0, | |
| i = 0, | |
| checkFlag = [], | |
| delaySum = options.delay, | |
| init = function () { | |
| timer = setInterval(function () { | |
| if (counter >= checkFlag.length) { | |
| clearInterval(timer); | |
| options.ondone(); | |
| return; | |
| } | |
| for (i = 0; i < images.length; i++) { | |
| if (images[i].complete === true) { | |
| if (checkFlag[i] === false) { | |
| checkFlag[i] = true; | |
| options.oneachload(images[i]); | |
| counter++; | |
| delaySum = delaySum + options.delay; | |
| } | |
| $(images[i]) | |
| .css("visibility", "visible") | |
| .delay(delaySum) | |
| .animate({ | |
| opacity: 1 | |
| }, options.fadein, | |
| function () { | |
| $(this) | |
| .parent() | |
| .removeClass("preloader"); | |
| }); | |
| } | |
| } | |
| }, options.check_timer); | |
| }; | |
| images.each(function () { | |
| if ($(this) | |
| .parent(options.preload_parent) | |
| .length === 0) $(this) | |
| .wrap("<div class='preloader' />"); | |
| else $(this) | |
| .parent() | |
| .addClass("preloader"); | |
| checkFlag[i++] = false; | |
| }); | |
| images = $.makeArray(images); | |
| var icon = jQuery("<img />", { | |
| id: 'loadingicon', | |
| src: '/assets/img/ajax-loader.gif' | |
| }) | |
| .hide() | |
| .appendTo("body"); | |
| timer = setInterval(function () { | |
| if (icon[0].complete === true) { | |
| clearInterval(timer); | |
| init(); | |
| icon.remove(); | |
| return; | |
| } | |
| }, 100); | |
| }; | |
| $(function () { | |
| jQuery(".grid") | |
| .preloader(); //activate the preloader on specified images | |
| }); |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| $.fn.preloader = function (options) { | |
| var defaults = { | |
| delay: 200, | |
| preload_parent: "", | |
| check_timer: 300, | |
| ondone: function () {}, | |
| oneachload: function (image) {}, | |
| fadein: 500 | |
| }; | |
| // variables declaration and precaching images and parent container | |
| var options = $.extend(defaults, options), | |
| root = $(this), | |
| images = root.find("img") | |
| .css({ | |
| "visibility": "hidden", | |
| opacity: 0 | |
| }), | |
| timer, counter = 0, | |
| i = 0, | |
| checkFlag = [], | |
| delaySum = options.delay, | |
| init = function () { | |
| timer = setInterval(function () { | |
| if (counter >= checkFlag.length) { | |
| clearInterval(timer); | |
| options.ondone(); | |
| return; | |
| } | |
| for (i = 0; i < images.length; i++) { | |
| if (images[i].complete === true) { | |
| if (checkFlag[i] === false) { | |
| checkFlag[i] = true; | |
| options.oneachload(images[i]); | |
| counter++; | |
| delaySum = delaySum + options.delay; | |
| } | |
| $(images[i]) | |
| .css("visibility", "visible") | |
| .delay(delaySum) | |
| .animate({ | |
| opacity: 1 | |
| }, options.fadein, | |
| function () { | |
| $(this) | |
| .parent() | |
| .removeClass("preloader"); | |
| }); | |
| } | |
| } | |
| }, options.check_timer); | |
| }; | |
| images.each(function () { | |
| if ($(this) | |
| .parent(options.preload_parent) | |
| .length === 0) $(this) | |
| .wrap("<div class='preloader' />"); | |
| else $(this) | |
| .parent() | |
| .addClass("preloader"); | |
| checkFlag[i++] = false; | |
| }); | |
| images = $.makeArray(images); | |
| var icon = jQuery("<img />", { | |
| id: 'loadingicon', | |
| src: '/assets/img/ajax-loader.gif' | |
| }) | |
| .hide() | |
| .appendTo("body"); | |
| timer = setInterval(function () { | |
| if (icon[0].complete === true) { | |
| clearInterval(timer); | |
| init(); | |
| icon.remove(); | |
| return; | |
| } | |
| }, 100); | |
| }; | |
| $(function () { | |
| jQuery(".grid") | |
| .preloader(); //activate the preloader on specified images | |
| }); |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment