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| <!doctype html> | |
| <html> | |
| <head> | |
| <title>KnockoutJS Custom Binding: animation</title> | |
| <style> | |
| /* WARNING: Only webkit animation defined */ | |
| @-webkit-keyframes zigzag { | |
| 0% { top: 0px; left: 0px; } | |
| 25% { top: 200px; left: 200px; } | |
| 50% { top: 0px; left: 400px; } | |
| 75% { top: 200px; left: 600px; } | |
| 100% { top: 0px; left: 800px; } | |
| } | |
| .animation { | |
| position: absolute; | |
| width: 20px; | |
| height: 20px; | |
| top: 0; | |
| left: 0; | |
| background: purple; | |
| border-radius: 10px; | |
| } | |
| .is-animation_start { | |
| -webkit-animation: zigzag 2s ease 1s forwards; | |
| } | |
| .is-animation_end { | |
| top: 0px; | |
| left: 800px; | |
| } | |
| </style> | |
| <script> | |
| window.fallbacks = { | |
| "animation": [ | |
| { | |
| "properties": { | |
| "top": "200px", | |
| "left": "200px" | |
| }, | |
| "delay": 1000, | |
| "duration": 500 | |
| }, | |
| { | |
| "properties": { | |
| "top": "0px", | |
| "left": "400px" | |
| }, | |
| "duration": 500 | |
| }, | |
| { | |
| "properties": { | |
| "top": "200px", | |
| "left": "600px" | |
| }, | |
| "duration": 500 | |
| }, | |
| { | |
| "properties": { | |
| "top": "0px", | |
| "left": "800px" | |
| }, | |
| "duration": 500 | |
| } | |
| ] | |
| } | |
| </script> | |
| <script src="//cdnjs.cloudflare.com/ajax/libs/modernizr/2.6.2/modernizr.min.js"></script> | |
| </head> | |
| <body> | |
| <div class="animation" data-bind="animation: { | |
| test: isRenderEnd, | |
| startClass: 'is-animation_start', | |
| endClass: 'is-animation_end', | |
| fallback: fallbacks.animation | |
| }"></div> | |
| <script src="//ajax.googleapis.com/ajax/libs/jquery/1.8.1/jquery.min.js"></script> | |
| <script src="//cdnjs.cloudflare.com/ajax/libs/knockout/2.1.0/knockout-min.js"></script> | |
| <script> | |
| /** | |
| * KO: CSS Animation w/ jQuery fallback. | |
| * @param {object} Binding value. | |
| * @config {object} | |
| * {obBoolean} [test] Observable, triggers the animation. | |
| * {string} [startClass] Animation start class. | |
| * {string} [endClass] Animation end class. | |
| * {array} [fallback] Animation jQuery fallback JSON. | |
| * @requires jQuery, Modernizr.cssanimations | |
| * @example | |
| * // View | |
| * <div class="animation" data-bind="animation: { | |
| * test: isRenderEnd, | |
| * startClass: 'is-animation_start', | |
| * endClass: 'is-animation_end', | |
| * fallback: fallbacks.animation | |
| * }"></div> | |
| */ | |
| ko.bindingHandlers.animation = { | |
| update: function(element, valueAccessor) { | |
| var value = valueAccessor(); | |
| var $el = $(element); | |
| if (ko.utils.unwrapObservable(value.test)) { | |
| $el.addClass(value.startClass); | |
| $el.on('animationend mozanimationend webkitAnimationEnd OAnimationEnd oanimationend oAnimationEnd', function() { | |
| $el.addClass(value.endClass); | |
| $el.removeClass(value.startClass); | |
| }); | |
| value.test(false); | |
| } | |
| } | |
| } | |
| $(function() { | |
| var ViewModel = function() { | |
| var self = this; | |
| self.isRenderEnd = ko.observable(false); | |
| /* Simulate "renderEnd" */ | |
| setTimeout(function() { | |
| self.isRenderEnd(true); | |
| }, 1000); | |
| } | |
| ko.applyBindings(new ViewModel()); | |
| }); | |
| </script> | |
| </body> | |
| </html> |
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