很多時候,我們需要一些炫酷的動畫效果,讓頁面更加吸引用戶的眼球,現有比較好用的JS動畫庫有:velocity和GSAP(支持falsh和js)。今天這里主要學習的是velocity配合css3動畫,快速打造屬於你的專題頁面。
PS:發現各種炫酷的效果都是由這些簡單的動作通過組合實現的,發現最終效果和動畫的設計者有很大關系,鄙人就屬於那種不怎么懂設計的人,這里只是拋磚引玉。
雖然我今天不准備詳細介紹GSAP這個動畫庫,但是還有有必要把相關資源的入口放在這里,供想要了解的 同學進行深入的 學習。
最好的學習就是查看官方API文檔,其次結合場景才會出現的問題,可以交流一下應該就可以解決。
廢話不多說了,進入今天的正題。
基礎技能
velocity功能
包含$.animate()所有功能,並且包含切換、轉換、循環、緩動、CSS切換、scroll功能,從效率角度來說,比CSS更高。
兼容性
支持IE8+,chrome、firefox、android、ios(可以配置mobileMA,提升手機訪問效果)
默認配置
可以使用$.Velocity.defaults進行查看管理。
注:關於配置的使用說明,可以參考官方文檔說明。其中begin、complete監聽動畫狀態
調用方式
支持兩種書寫方式
- 第一種:
/** * @param {Object|String} 需要改變css屬性最終狀態值或者是注冊動畫 * @param {Object} 動畫基本配置,可以查看默認配置 */ $element.velocity(properties, options)
- 第二種
/** * @param {Object} 操作元素,可以是原生對象,也可以是包裝對象 * @param {Object|String} 需要改變css屬性最終狀態值或者是注冊動畫 * @param {Object} 動畫基本配置,可以查看默認配置 */ $.Velocity($element, properties, options);
另:所有的屬性值都可以是函數,返回最終的值
提升技能
自定義動畫效果
velocity提供了注冊自定義動畫的方法,方便使用者自定義,並進行方便多次使用
$.Velocity.RegisterEffect(name, { defaultDuration: duration, calls: [ [ { property: value }, durationPercentage, { options } ], [ { property: value }, durationPercentage, { options } ] ], reset: { property: value, property: value } });
來一個簡單的例子:
$.Velocity.RegisterEffect("callout.pulse", { defaultDuration: 900, calls: [ [ { scaleX: 1.1 }, 0.50 ], [ { scaleX: 1 }, 0.50 ] ] });
注冊一個callout.pulse方法,如何進行使用呢?可以參照基礎技能中的調用方式,這里使用其中一種方式
$elements.velocity('callout.pulse'); //相當於是properties參數值
UI pack--動畫包
官方提供一些動畫包,可以直接進行使用,也可以通過自定義注冊動畫,然后進行使用。
現有的的動畫效果有:
callout.bounce,callout.shake,callout.flash,callout.pulse,callout.swing,callout.tada,transition.fadeIn,transition.fadeOut,transition.flipXIn,transition.flipXOut,transition.flipYIn,transition.flipYOut,transition.flipBounceXIn,transition.flipBounceXOut,transition.flipBounceYIn,transition.flipBounceYOut,transition.swoopIn,transition.swoopOut,transition.whirlIn,transition.whirlOut,transition.shrinkIn,transition.shrinkOut,transition.expandIn,transition.expandOut,transition.bounceIn,transition.bounceOut,transition.bounceUpIn,transition.bounceUpOut,transition.bounceDownIn,transition.bounceDownOut,transition.bounceLeftIn,transition.bounceLeftOut,transition.bounceRightIn,transition.bounceRightOut,transition.slideUpIn,transition.slideUpOut,transition.slideDownIn,transition.slideDownOut,transition.slideLeftIn,transition.slideLeftOut,transition.slideRightIn,transition.slideRightOut,transition.slideUpBigIn,transition.slideUpBigOut,transition.slideDownBigIn,transition.slideDownBigOut,transition.slideLeftBigIn,transition.slideLeftBigOut,transition.slideRightBigIn,transition.slideRightBigOut,transition.perspectiveUpIn,transition.perspectiveUpOut,transition.perspectiveDownIn,transition.perspectiveDownOut,transition.perspectiveLeftIn,transition.perspectiveLeftOut,transition.perspectiveRightIn,transition.perspectiveRightOut
具體效果可以查看最下面的例子。
自定義動畫隊列
官方提供了執行動畫隊列的方法,$.Velocity.RunSequence(animationArr);其中animationArr是動畫數組,數組的每個元素是一個元素動畫效果,具體例子如下:
var mySequence = [ { elements: $element1, properties: { translateX: 100 }, options: { duration: 1000 } }, { elements: $element2, properties: { translateX: 200 }, options: { duration: 1000, sequenceQueue: false }, { elements: $element3, properties: { translateX: 300 }, options: { duration: 1000?} ]; $.Velocity.RunSequence(mySequence); //默認隊列動畫是按照順序執行的,可以通過設置sequenceQueue改變當前元素執行時機。默認是true,當為true時,指的是按照順序執行,如果設置成false指的是,可以和上一個元素動畫同時執行
支持promise
引入官方推薦的bluebird和when,即可采用如下使用方式:
$element.velocity(properties, options).then(); //需要注意是的是無線循環和隊列不支持該形式
終極技能
配合css3動畫,達到最佳效果
友情提示:
velocity在進場和出場動畫方面優勢比較大,css3在循環動畫上優勢比較大。當然萬惡的IE兼容問題
基於上面所講到的,實現了一個基於jquery、velocity、animation.css實現的動畫,僅供參考
/** * 動畫處理 * author: 黑MAO */ $(function() { 'use strict'; /****內部方法開始****/ /** * css動畫執行函數 * @param {Object} 目標元素 * @param {String} 初始class * @param {String} 動畫類型 * @param {Number} 動畫時長 * @param {Number} 動畫延遲 * @param {Number} 循環次數 */ var timer; function _cssRun(targetEl, className, animation, duration, delay, loop) { duration = duration*1 || 1000; delay = delay*1 || 0; loop = (loop || loop == 0) ? loop*1 : 1; if(loop < 1) { loop = 'infinite'; } $(targetEl).removeClass(); $(targetEl).addClass(className).addClass(animation); $(targetEl).css({ 'animation-duration': duration+'ms', 'animation-delay': delay+'ms', 'animation-iteration-count': loop+'' }); if(loop != 'infinite') { clearTimeout(timer); timer = setTimeout(function() { $(targetEl).removeClass(animation); }, duration*loop + delay); } } /** * 監聽select變化方法 * @param {Object} 目標元素 * @param {Object} 操作元素集合 * @param {String} 初始class * @param {String} 動畫類型 ["css", "js"] */ function _changeFunc(targetEl, opElementObj, className, animationType) { var animation = $(opElementObj.animationEl).val(); var duration = $(opElementObj.durationEl).val(); var delay = $(opElementObj.delayEl).val(); var loop = $(opElementObj.loopEl).val(); if(animationType == "css") { _cssRun(targetEl, className, animation, duration, delay, loop); }else { var ras = new Ras(); if(animation) { ras.run(targetEl, 'stop'); ras.run(targetEl, animation, {duration: duration, delay: delay, stagger: 200, drag: true}); } } } /** * 初始化動畫 * @param {Array} 動畫數組 * @param {Object} 操作元素對象 * @param {Object} 目標元素 * @param {Number} 動畫延遲 * @param {String} 需要顯示的動畫類型 ["show", "hide", "normal", "all"] * @param {String} 動畫類型 ["css", "js"] */ function _initAnimation(animationArr, opElementObj, targetEl, type, animationType) { var conf = opElementObj; var className = $(targetEl).attr("class"); $(conf.animationEl).prepend('<option value="" diabled="disabled">選擇動畫類型</option>'); $(animationArr).each(function(key, val) { var isShow = false; switch(type) { case "show": if(val.indexOf('In') > 0) { isShow = true; } break; case "hide": if(val.indexOf('Out') > 0) { isShow = true; } break; case "normal": if(val.indexOf('Out') == -1 && val.indexOf('In') == -1) { isShow = true; } break; default: isShow = true; break; } isShow && $(conf.animationEl).append('<option value="'+val+'">'+val+'</option>'); }); $(conf.animationEl).on('change', function() { _changeFunc(targetEl, conf, className, animationType); }); $(conf.durationEl).on('change', function() { _changeFunc(targetEl, conf, className, animationType); }); $(conf.delayEl).on('change', function() { _changeFunc(targetEl, conf, className, animationType); }); $(conf.loopEl).on('change', function() { _changeFunc(targetEl, conf, className, animationType); }); } /****內部方法結束****/ function Ras(opts) { var conf = { beforeIndex : 0, //上一頁序列號 currentIndex : 0, //當前頁序列號 playing : true, //是否在運行 downward : true, //是否向下滾動 imgList: [], //頁面內圖片列表 quenes: { show: [], //頁面顯示列表 hide: [] //頁面隱藏列表 }, navFunc: null, //導航回調函數 cssAnimationExtra: [], //css動畫擴展 jsAnimationExtra: [] //js動畫擴展 }; this.conf = $.extend(conf, opts); } //對外暴漏 window.Ras = Ras; $.extend(Ras.prototype, { init: function() { var self = this; var conf = this.conf; //綁定鍵盤和鼠標事件 var quenes = conf.quenes; var showList = conf.quenes.show; var hideList = conf.quenes.hide; var senceNum = showList.length; $(document).on('mousewheel keyup',function(e){ if( !conf.playing ){ conf.playing = true; if( e.keyCode && (e.keyCode==39||e.keyCode==40)){ conf.downward = true; } if( e.keyCode && (e.keyCode==37||e.keyCode==38) ){ conf.downward = false; } if( e.deltaY){ conf.downward = e.deltaY<0?true:false; } if( e.keyCode == 37 || e.keyCode == 38 || e.keyCode == 39 || e.keyCode == 40 || e.deltaY ){ conf.beforeIndex = conf.currentIndex; conf.currentIndex = conf.downward ?conf.currentIndex + 1:conf.currentIndex - 1; conf.currentIndex = conf.currentIndex>=senceNum?0:conf.currentIndex; conf.currentIndex = conf.currentIndex<0?senceNum-1:conf.currentIndex; conf.navFunc && conf.navFunc(conf.currentIndex); self.show(hideList[conf.beforeIndex], showList[conf.currentIndex], function() { conf.playing = false; }); } } return false; }); //處理圖片預加載 var imgList = conf.imgList; imgList.length && self.imgLoader(imgList); //默認顯示第一屏 self.show(null, showList[0], function() { conf.playing = false; }); }, /** * 初始化CSS動畫 * @param {Object} 聯動元素集合 * @param {Object} 目標元素 * @param {String} 選項類型 ["show", "hide", "normal", "all"] */ initCssAnimation: function(opElementObj, targetEl, type) { var conf = this.conf; var animationStr = 'bounce,pulse,rubberBand,shake,swing,tada,bounceIn,bounceInDown,bounceInLeft,bounceInRight,bounceInUp,bounceOut,bounceOutDown,bounceOutLeft,bounceOutRight,bounceOutUp,fadeIn,fadeInDown,fadeInDownBig,fadeInLeft,fadeInLeftBig,fadeInRight,fadeInRightBig,fadeInUp,fadeInUpBig,fadeOut,fadeOutDown,fadeOutDownBig,fadeOutLeft,fadeOutLeftBig,fadeOutRight,fadeOutRightBig,fadeOutUp,fadeOutUpBig,flip,flipInX,flipInY,flipOutX,flipOutY,lightSpeedOut,rotateIn,rotateInDownLeft,rotateInDownRight,rotateInUpLeft,rotateInUpRight,rotateOut,rotateOutDownLeft,rotateOutDownRight,rotateOutUpLeft,rotateOutUpRight,hinge,rollIn,rollOut,zoomIn,zoomInDown,zoomInLeft,zoomInRight,zoomInUp,zoomOut,zoomOutDown,zoomOutLeft,zoomOutRight,zoomOutUp,slideInDown,slideInLeft,slideInRight,slideInUp,slideOutDown,slideOutLeft,slideOutRight,slideOutUp,magic,openDownLeft,openDownRight,openUpLeft,openUpRight,openDownLeftRetourn,openDownRightRetourn,openUpLeftRetourn,openUpRightRetourn,openDownLeftOut,openDownRightOut,openUpLeftOut,openUpRightOut,perspectiveDown,perspectiveLeft,perspectiveRight,perspectiveUp,perspectiveDownRetourn,perspectiveLeftRetourn,perspectiveRightRetourn,perspectiveUpRetourn,puffIn,puffOut,rotateDown,rotateLeft,rotateRight,rotateUp,slideDown,slideLeft,slideRight,slideUp,slideDownRetourn,slideLeftRetourn,slideRightRetourn,slideUpRetourn,swap,twisterInDown,twisterInUp,vanishIn,vanishOut,swashOut,swashIn,foolishOut,holeOut,tinRightOut,tinLeftOut,tinUpOut,tinDownOut,tinRightIn,tinUpIn,tinDownIn,bombRightOut,bombLeftOut,boingInUp,boingOutDown,spaceOutUp,spaceOutRight,spaceOutLeft,spaceInUp,spaceInRight,spaceInDown,spaceInLeft,boomIn,circleRotate'; var animationArr = animationStr.split(','); var arr = []; $.merge(arr, animationArr, conf.cssAnimationExtra); arr = $.unique(arr); _initAnimation(arr, opElementObj, targetEl, type, 'css'); }, /** * 初始化JS動畫 * @param {Object} 聯動元素集合 * @param {Object} 目標元素 * @param {String} 選項類型 ["show", "hide", "normal", "all"] */ initJsAnimation: function(opElementObj, targetEl, type) { var conf = this.conf; var animationStr = 'callout.bounce,callout.shake,callout.flash,callout.pulse,callout.swing,callout.tada,transition.fadeIn,transition.fadeOut,transition.flipXIn,transition.flipXOut,transition.flipYIn,transition.flipYOut,transition.flipBounceXIn,transition.flipBounceXOut,transition.flipBounceYIn,transition.flipBounceYOut,transition.swoopIn,transition.swoopOut,transition.whirlIn,transition.whirlOut,transition.shrinkIn,transition.shrinkOut,transition.expandIn,transition.expandOut,transition.bounceIn,transition.bounceOut,transition.bounceUpIn,transition.bounceUpOut,transition.bounceDownIn,transition.bounceDownOut,transition.bounceLeftIn,transition.bounceLeftOut,transition.bounceRightIn,transition.bounceRightOut,transition.slideUpIn,transition.slideUpOut,transition.slideDownIn,transition.slideDownOut,transition.slideLeftIn,transition.slideLeftOut,transition.slideRightIn,transition.slideRightOut,transition.slideUpBigIn,transition.slideUpBigOut,transition.slideDownBigIn,transition.slideDownBigOut,transition.slideLeftBigIn,transition.slideLeftBigOut,transition.slideRightBigIn,transition.slideRightBigOut,transition.perspectiveUpIn,transition.perspectiveUpOut,transition.perspectiveDownIn,transition.perspectiveDownOut,transition.perspectiveLeftIn,transition.perspectiveLeftOut,transition.perspectiveRightIn,transition.perspectiveRightOut'; var animationArr = animationStr.split(','); var arr = []; $.merge(arr, animationArr, conf.cssAnimationExtra); arr = $.unique(arr); _initAnimation(arr, opElementObj, targetEl, type, 'js'); }, /** * 入場動畫 * @param {Array} 出場隊列 * @param {Array} 入場隊列 * @param {Function} 入場完成回調 */ show: function(beforeQuene, currentQuene, callback) { var self = this; self.hide(beforeQuene); currentQuene && self.run(currentQuene).then(function() { callback && callback(); }); }, /** * 出場動畫 * @param {Array} 出場隊列 * @param {Function} 出場完成回調 */ hide: function(quene, callback) { var self = this; callback && callback(); quene && self.run(quene); }, /** * 圖片懶加載 * @param {Array} 圖片列表 * @param {Function} 圖片加載回調 */ imgLoader: function(imgList, callback) { var count = imgList.length, i = 0, success = 0, failed = 0, failList = []; for ( ; i < count ; i++ ) { var img = new Image(); (function(i){ img.onload = function () { success++; if( (success + failed) == count ) { callback&&callback.call( imgList , failed, failList); } }; img.onerror = function () { failed++; failList.push(imgList[i]); if( (success + failed) == count ) { callback&&callback.call( imgList , failed, failList ); } }; img.src = imgList[i]; })(i); } }, /** * 注冊自定義動畫 */ register: function() { var self = this; var args = [].slice.apply(arguments); $.Velocity.RegisterEffect.apply(self, args); }, /** * 封裝velocity方法,統一管理隊列和單個動畫 * @return {Object} promise對象 */ run: function() { var deferred = $.Deferred(); var self = this; var args = [].slice.call(arguments); var len = args[0].length; if($.isArray(args[0])) { if(!args[0][len-1].options){ args[0][len-1].options = {}; } args[0][len-1].options.complete = function() { deferred.resolve(); }; $.Velocity.RunSequence.call(self, args[0]); return deferred.promise(); }else { return $.Velocity.animate.apply(self, args); } }, /** * 啟動CSS動畫 * @param {Object} 操作元素 * @param {String} 初始class * @param {String} css動畫 * @param {Number} 動畫時長 * @param {Number} 動畫延遲 * @return {Object} promise對象 */ cssAnimationRun: function(targetEl, className, animation, duration, delay, loop) { loop = (loop === true) ? 0 : loop; _cssRun(targetEl, className, animation, duration, delay, loop); }, /** * 啟動JS動畫 * @param {Object} 操作元素 * @param {String} css動畫 * @param {Number} 動畫時長 * @param {Number} 動畫延遲 * @return {Object} promise對象 */ jsAnimationRun: function(targetEl, animation, options) { var opts = { stagger: 200, drag: true }; opts = $.extend(opts, options); if(animation) { this.run(targetEl, 'stop'); this.run(targetEl, animation, opts); } } }); });
使用方式:
var ras = new Ras({ cssAnimationExtra: ['bounce'], jsAnimationExtra: ['callout.bounce'] }); ras.init(); //調用相關方法
附錄(資源地址):
<link rel="stylesheet" href="
http://s1.qhimg.com/!efd6dff2/animation.css">
<script src="
http://s0.qhimg.com/lib/jquery/191.js" ></script>
<script src="http://s3.qhimg.com/!44713922/bluebird.js" ></script>
<script src="http://s6.qhimg.com/!7c8590ec/jquery.mousewheel.min.js"></script>
<script src="http://s6.qhimg.com/!ccefcc09/velocity.min.js"></script>
<script src="http://s5.qhimg.com/!d0b08d4d/velocity.ui.min.js"></script>
參考資料: