https://blog.csdn.net/liona_koukou/article/details/84943467?utm_medium=distribute.pc_relevant.none-task-blog-BlogCommendFromMachineLearnPai2-1.channel_param&depth_1-utm_source=distribute.pc_relevant.none-task-blog-BlogCommendFromMachineLearnPai2-1.channel_param
setInterval不会清除定时器队列，会越来越卡，解决方法如上。
setTimeout自带清除定时器方法