一、功能描述：
1、点击购买按钮，模拟抛物线将物品弹到购物车里；
2、购物车添加物品后，显示+1动画；
效果图如下：
实现如下：
1、导入jquery相关的包：
<script type="text/javascript" src="https://www.jb51.net/jquery-2.1.1.min.js"></script> <script src="https://www.jb51.net/jquery.fly.min.js"></script>
2、html文件内容：
<!DOCTYPE HTML> <html> <head> <meta charset="utf-8"> <meta content="width=device-width, initial-scale=1, maximum-scale=1"> <title>jQuery实现模拟天猫加入购物车飞入动画效果</title> <meta content="jquery,购物车" /> <body> <div> <div> <div> <div> 土豪，请猛击我，加入购物车 </div> </div> </div> </div> <div> <div> <i></i> <span>购物车</span> </div> </div> </div> </body>
3、css样式：
<style type="text/css"> .demo{width:820px; margin:60px auto 10px auto} .m-sidebar{position: fixed;top: 0;right: 0;background: #000;z-index: 2000;width: 85px;height: 100%;font-size: 12px;color: #fff;} .cart{color: #fff;text-align:center;line-height: 20px;padding: 200px 0 0 0px;} .cart span{display:block;width:20px;margin:10 0 0 0;} .cart i{width:50px;height:35px;display:block; background:url(car.png) no-repeat;} #msg{position:fixed; top:300px; right:35px; z-index:10000; width:1px; height:52px; line-height:52px; font-size:20px; text-align:center; color:#fff; background:#360; display:none} .box{width:300px; height:150px; border:1px solid #e0e0e0; text-align:center} .u-flyer{display: block;width: 50px;height: 50px;border-radius: 50px;position: fixed;z-index: 9999;} .button { display: inline-block; outline: none; cursor: pointer; text-align: center; text-decoration: none; font: 16px/100% 'Microsoft yahei',Arial, Helvetica, sans-serif; padding: .5em 2em .55em; text-shadow: 0 1px 1px rgba(0,0,0,.3); -webkit-border-radius: .5em; -moz-border-radius: .5em; border-radius: .5em; -webkit-box-shadow: 0 1px 2px rgba(0,0,0,.2); -moz-box-shadow: 0 1px 2px rgba(0,0,0,.2); box-shadow: 0 1px 2px rgba(0,0,0,.2); } .button:hover { text-decoration: none; } .button:active { position: relative; top: 1px; } /* orange */ .orange { color: #fef4e9; border: solid 1px #da7c0c; background: #f78d1d; background: -webkit-gradient(linear, left top, left bottom, from(#faa51a), to(#f47a20)); background: -moz-linear-gradient(top, #faa51a, #f47a20); filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#faa51a', endColorstr='#f47a20'); } .orange:hover { background: #f47c20; background: -webkit-gradient(linear, left top, left bottom, from(#f88e11), to(#f06015)); background: -moz-linear-gradient(top, #f88e11, #f06015); filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#f88e11', endColorstr='#f06015'); } .orange:active { color: #fcd3a5; background: -webkit-gradient(linear, left top, left bottom, from(#f47a20), to(#faa51a)); background: -moz-linear-gradient(top, #f47a20, #faa51a); filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#f47a20', endColorstr='#faa51a'); }
4、核心的JQuery代码：
<script> //实现购物车+1动画效果 (function ($) { $.extend({ tipsBox: function (options) { options = $.extend({ obj: null, //jq对象，要在那个html标签上显示 str: "+1", //字符串，要显示的内容 startSize: "18px", //动画开始的文字大小 endSize: "38px", //动画结束的文字大小 interval: 600, //动画时间间隔 color: "red", //文字颜色 callback: function () { } //回调函数 }, options); $("body").append("<span>" + options.str + "</span>"); var box = $(".num"); var left = options.obj.offset().left + options.obj.width() / 2; var top = options.obj.offset().top - options.obj.height(); box.css({ "position": "absolute", "left": left + "px", "top": top + "px", "z-index": 9999, "font-size": options.startSize, "line-height": options.endSize, "color": options.color }); box.animate({ "font-size": options.endSize, "opacity": "0", "top": top - parseInt(options.endSize) + "px" }, options.interval, function () { box.remove(); options.callback(); }); } }); })(jQuery); function niceIn(prop){ prop.find('i').addClass('niceIn'); setTimeout(function(){ prop.find('i').removeClass('niceIn'); },1000); } //实现抛物线动画功能 $(function() { var offset = $("#end").offset(); $(".addcar").click(function(event){ var addcar = $(this); var img = "images/lg.jpg"; var flyer = $('<img src="'https://www.jb51.net/article/+img+'">'); flyer.fly({ start: { left: event.pageX, top: event.pageY }, end: { left: offset.left+10, top: offset.top+10, width: 0, height: 0 }, onEnd: function(){ $.tipsBox({ obj: $("#end"), str: "<b>+1</b>", callback: function () { } }); niceIn($("#end")); } }); }); }); </script>