clearInterval(timeout)
timeout<Timeout> | <string> | <number> 由setInterval()返回的Timeout对象、或作为字符串或数字的Timeout对象的原始类型。
取消由 setInterval() 创建的 Timeout 对象。
timeout<Timeout> | <string> | <number> ATimeoutobject as returned bysetInterval()or the primitive of theTimeoutobject as a string or a number.
Cancels a Timeout object created by setInterval().