参考文章:http://www.zhangxinxu.com/wordpress/2013/12/javascript-js-元素-抛物线-运动-动画/ parapola.js /*! * by zhangxinxu(.com) 2012-12-27 * you can visit http://www.zhangxinxu.com/wordpress/?p=3855 to get more infomation * under MIT license */ var funParabola =…