运行效果截图如下：
点击此处查看在线演示效果。
完整实例代码点击此处本站下载。
具体代码如下：
<!DOCTYPE HTML> <html> <head> <meta charset="utf-8"> <title>抛物线运动效果</title> <style type="text/css"> .boll { width: 50px; height: 50px; background-color: #ff3333; position: absolute; top: 380px; left: 100px; -moz-border-radius: 50px; -webkit-border-radius: 50px; border-radius: 50px; } .target { width: 50px; height: 50px; background-color: #CDCDCD; position: absolute; top: 180px; left: 600px; -moz-border-radius: 50px; -webkit-border-radius: 50px; border-radius: 50px; } </style> <script type="text/javascript" src="https://www.jb51.net/js/jquery1.8.3.min.js"></script> <script type="text/javascript" src="https://www.jb51.net/js/parabola.js"></script> </head> <body> <div> <a href="#" title="A Title">reset</a> <a href="#" title="A Title">run</a> <a href="#" title="A Title">stop</a> <a href="#" title="A Title">setOptions</a> </div> <div></div> <div></div> <script type="text/javascript"> var bool = new Parabola({ el: "#boll", offset: [500, 100], curvature: 0.005, duration: 3000, callback:function(){ alert("完成后回调") }, stepCallback:function(x,y){ console.log(x,y); $("<div>").appendTo("body").css({ "position": "absolute", "top": this.elOriginalTop + y, "left":this.elOriginalLeft + x, "background-color":"#CDCDCD", "width":"5px", "height":"5px", "border-radius": "5px" }); } }); $("#reset").click(function (event) { event.preventDefault(); bool.reset() }); $("#run").click(function (event) { event.preventDefault(); bool.start(); }); $("#stop").click(function (event) { event.preventDefault(); bool.stop(); }); $("#setOptions").click(function (event) { event.preventDefault(); bool.setOptions({ targetEl: $("#target"), curvature: 0.001, duration: 1000 }); }); </script> </body> </html>