看 swiper [https://www.swiper.com.cn/demo/index.html](https://link.segmentfault.com/?enc=SLC6oKdN%2FEBxtR8N6z22aA%3D%3D.7p2cxjvyNLgOxv3epV17jKCF%2Frorbr%2FGRCSc7Q7qWRRF8QUylTcmjvk4kihkKXvp) 分页器 / 动态指示点(040) [测试传送门](https://link.segmentfault.com/?enc=JBnAvGClgZ%2Fjskj4smk5rw%3D%3D.3YlNEWz4vTwl8D8v7%2FPqeY50koW4KCxinJ7gSK1ojj8zt1OHKUeAfpCUI3b3yeYggvC2RXPr8nh%2F7PdHqgqOqQ%3D%3D),swiper 是开源的,直接看源码就行