animate.css和wow.js结合使用实现动画效果

前景

手机站网页实现动画效果，animate.css是一个轻量级的css动画库，提供预定义的动画效果，使用方法参考   Animate.css | A cross-browser library of CSS animations.

问题：

添加好动画后，发现动画会在页面加载后一次性执行，缺少边滚动边展示动画的交互效果

解决：

借用WOW.js是对animate.css的扩充，让页面滚动更灵动

使用：

//引入资源
<link rel="stylesheet" href="./css/animate.min.css">
<script src="./js/wow.min.js"></script>//dom
<a href="./news.html" class="wow animate__animated animate__flipInX">了 解 更 多 GO</a>

//js调用
<script>    var wow = new WOW({boxClass:'wow',animateClass:'animate__animated',offset:8,mobile: true,live: true});wow.init();
</script>

补充:

wow.min.js内容

/*! WOW - v1.1.2 - 2015-04-07
* Copyright (c) 2015 Matthieu Aussaguel; Licensed MIT */(function(){var a,b,c,d,e,f=function(a,b){return function(){return a.apply(b,arguments)}},g=[].indexOf||function(a){for(var b=0,c=this.length;c>b;b++)if(b in this&&this[b]===a)return b;return-1};b=function(){function a(){}return a.prototype.extend=function(a,b){var c,d;for(c in b)d=b[c],null==a[c]&&(a[c]=d);return a},a.prototype.isMobile=function(a){return/Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(a)},a.prototype.createEvent=function(a,b,c,d){var e;return null==b&&(b=!1),null==c&&(c=!1),null==d&&(d=null),null!=document.createEvent?(e=document.createEvent("CustomEvent"),e.initCustomEvent(a,b,c,d)):null!=document.createEventObject?(e=document.createEventObject(),e.eventType=a):e.eventName=a,e},a.prototype.emitEvent=function(a,b){return null!=a.dispatchEvent?a.dispatchEvent(b):b in(null!=a)?a[b]():"on"+b in(null!=a)?a["on"+b]():void 0},a.prototype.addEvent=function(a,b,c){return null!=a.addEventListener?a.addEventListener(b,c,!1):null!=a.attachEvent?a.attachEvent("on"+b,c):a[b]=c},a.prototype.removeEvent=function(a,b,c){return null!=a.removeEventListener?a.removeEventListener(b,c,!1):null!=a.detachEvent?a.detachEvent("on"+b,c):delete a[b]},a.prototype.innerHeight=function(){return"innerHeight"in window?window.innerHeight:document.documentElement.clientHeight},a}(),c=this.WeakMap||this.MozWeakMap||(c=function(){function a(){this.keys=[],this.values=[]}return a.prototype.get=function(a){var b,c,d,e,f;for(f=this.keys,b=d=0,e=f.length;e>d;b=++d)if(c=f[b],c===a)return this.values[b]},a.prototype.set=function(a,b){var c,d,e,f,g;for(g=this.keys,c=e=0,f=g.length;f>e;c=++e)if(d=g[c],d===a)return void(this.values[c]=b);return this.keys.push(a),this.values.push(b)},a}()),a=this.MutationObserver||this.WebkitMutationObserver||this.MozMutationObserver||(a=function(){function a(){"undefined"!=typeof console&&null!==console&&console.warn("MutationObserver is not supported by your browser."),"undefined"!=typeof console&&null!==console&&console.warn("WOW.js cannot detect dom mutations, please call .sync() after loading new content.")}return a.notSupported=!0,a.prototype.observe=function(){},a}()),d=this.getComputedStyle||function(a){return this.getPropertyValue=function(b){var c;return"float"===b&&(b="styleFloat"),e.test(b)&&b.replace(e,function(a,b){return b.toUpperCase()}),(null!=(c=a.currentStyle)?c[b]:void 0)||null},this},e=/(\-([a-z]){1})/g,this.WOW=function(){function e(a){null==a&&(a={}),this.scrollCallback=f(this.scrollCallback,this),this.scrollHandler=f(this.scrollHandler,this),this.resetAnimation=f(this.resetAnimation,this),this.start=f(this.start,this),this.scrolled=!0,this.config=this.util().extend(a,this.defaults),this.animationNameCache=new c,this.wowEvent=this.util().createEvent(this.config.boxClass)}return e.prototype.defaults={boxClass:"wow",animateClass:"animated",offset:0,mobile:!0,live:!0,callback:null},e.prototype.init=function(){var a;return this.element=window.document.documentElement,"interactive"===(a=document.readyState)||"complete"===a?this.start():this.util().addEvent(document,"DOMContentLoaded",this.start),this.finished=[]},e.prototype.start=function(){var b,c,d,e;if(this.stopped=!1,this.boxes=function(){var a,c,d,e;for(d=this.element.querySelectorAll("."+this.config.boxClass),e=[],a=0,c=d.length;c>a;a++)b=d[a],e.push(b);return e}.call(this),this.all=function(){var a,c,d,e;for(d=this.boxes,e=[],a=0,c=d.length;c>a;a++)b=d[a],e.push(b);return e}.call(this),this.boxes.length)if(this.disabled())this.resetStyle();else for(e=this.boxes,c=0,d=e.length;d>c;c++)b=e[c],this.applyStyle(b,!0);return this.disabled()||(this.util().addEvent(window,"scroll",this.scrollHandler),this.util().addEvent(window,"resize",this.scrollHandler),this.interval=setInterval(this.scrollCallback,50)),this.config.live?new a(function(a){return function(b){var c,d,e,f,g;for(g=[],c=0,d=b.length;d>c;c++)f=b[c],g.push(function(){var a,b,c,d;for(c=f.addedNodes||[],d=[],a=0,b=c.length;b>a;a++)e=c[a],d.push(this.doSync(e));return d}.call(a));return g}}(this)).observe(document.body,{childList:!0,subtree:!0}):void 0},e.prototype.stop=function(){return this.stopped=!0,this.util().removeEvent(window,"scroll",this.scrollHandler),this.util().removeEvent(window,"resize",this.scrollHandler),null!=this.interval?clearInterval(this.interval):void 0},e.prototype.sync=function(){return a.notSupported?this.doSync(this.element):void 0},e.prototype.doSync=function(a){var b,c,d,e,f;if(null==a&&(a=this.element),1===a.nodeType){for(a=a.parentNode||a,e=a.querySelectorAll("."+this.config.boxClass),f=[],c=0,d=e.length;d>c;c++)b=e[c],g.call(this.all,b)<0?(this.boxes.push(b),this.all.push(b),this.stopped||this.disabled()?this.resetStyle():this.applyStyle(b,!0),f.push(this.scrolled=!0)):f.push(void 0);return f}},e.prototype.show=function(a){return this.applyStyle(a),a.className=a.className+" "+this.config.animateClass,null!=this.config.callback&&this.config.callback(a),this.util().emitEvent(a,this.wowEvent),this.util().addEvent(a,"animationend",this.resetAnimation),this.util().addEvent(a,"oanimationend",this.resetAnimation),this.util().addEvent(a,"webkitAnimationEnd",this.resetAnimation),this.util().addEvent(a,"MSAnimationEnd",this.resetAnimation),a},e.prototype.applyStyle=function(a,b){var c,d,e;return d=a.getAttribute("data-wow-duration"),c=a.getAttribute("data-wow-delay"),e=a.getAttribute("data-wow-iteration"),this.animate(function(f){return function(){return f.customStyle(a,b,d,c,e)}}(this))},e.prototype.animate=function(){return"requestAnimationFrame"in window?function(a){return window.requestAnimationFrame(a)}:function(a){return a()}}(),e.prototype.resetStyle=function(){var a,b,c,d,e;for(d=this.boxes,e=[],b=0,c=d.length;c>b;b++)a=d[b],e.push(a.style.visibility="visible");return e},e.prototype.resetAnimation=function(a){var b;return a.type.toLowerCase().indexOf("animationend")>=0?(b=a.target||a.srcElement,b.className=b.className.replace(this.config.animateClass,"").trim()):void 0},e.prototype.customStyle=function(a,b,c,d,e){return b&&this.cacheAnimationName(a),a.style.visibility=b?"hidden":"visible",c&&this.vendorSet(a.style,{animationDuration:c}),d&&this.vendorSet(a.style,{animationDelay:d}),e&&this.vendorSet(a.style,{animationIterationCount:e}),this.vendorSet(a.style,{animationName:b?"none":this.cachedAnimationName(a)}),a},e.prototype.vendors=["moz","webkit"],e.prototype.vendorSet=function(a,b){var c,d,e,f;d=[];for(c in b)e=b[c],a[""+c]=e,d.push(function(){var b,d,g,h;for(g=this.vendors,h=[],b=0,d=g.length;d>b;b++)f=g[b],h.push(a[""+f+c.charAt(0).toUpperCase()+c.substr(1)]=e);return h}.call(this));return d},e.prototype.vendorCSS=function(a,b){var c,e,f,g,h,i;for(h=d(a),g=h.getPropertyCSSValue(b),f=this.vendors,c=0,e=f.length;e>c;c++)i=f[c],g=g||h.getPropertyCSSValue("-"+i+"-"+b);return g},e.prototype.animationName=function(a){var b;try{b=this.vendorCSS(a,"animation-name").cssText}catch(c){b=d(a).getPropertyValue("animation-name")}return"none"===b?"":b},e.prototype.cacheAnimationName=function(a){return this.animationNameCache.set(a,this.animationName(a))},e.prototype.cachedAnimationName=function(a){return this.animationNameCache.get(a)},e.prototype.scrollHandler=function(){return this.scrolled=!0},e.prototype.scrollCallback=function(){var a;return!this.scrolled||(this.scrolled=!1,this.boxes=function(){var b,c,d,e;for(d=this.boxes,e=[],b=0,c=d.length;c>b;b++)a=d[b],a&&(this.isVisible(a)?this.show(a):e.push(a));return e}.call(this),this.boxes.length||this.config.live)?void 0:this.stop()},e.prototype.offsetTop=function(a){for(var b;void 0===a.offsetTop;)a=a.parentNode;for(b=a.offsetTop;a=a.offsetParent;)b+=a.offsetTop;return b},e.prototype.isVisible=function(a){var b,c,d,e,f;return c=a.getAttribute("data-wow-offset")||this.config.offset,f=window.pageYOffset,e=f+Math.min(this.element.clientHeight,this.util().innerHeight())-c,d=this.offsetTop(a),b=d+a.clientHeight,e>=d&&b>=f},e.prototype.util=function(){return null!=this._util?this._util:this._util=new b},e.prototype.disabled=function(){return!this.config.mobile&&this.util().isMobile(navigator.userAgent)},e}()}).call(this);