Bootstrap弹窗动画效果组件：velocity，使用方法：$("#"+modalId+".modal-dialog").velocity("特效名称"); //特效类型： //transition.fadeIn //transition.flipXIn、transition.flipYIn //transition.flipBounceXIn、transition.flipBounceYIn //transition.swoopIn、transition.whirlIn、transition.shrinkIn、transition.expandIn //tr