纯Javascr ipt时钟效果，完全是用Js来实现的电子表效果，圆形的电子钟效果，看上去挺可爱，代码有些复杂，为学习JS的朋友提供参考吧-Clock effect is pure Javascr ipt, electronic table effects Js to a circular electronic clock effect, looks cute, some complex code, to provide a reference for learning JS friends