检查以下链接:

• Implicit Wait -指示Web驱动程序等待在一段时间内通过轮询DOM.声明隐式等待后，它将在Web驱动程序实例的整个生命周期中都可用.默认情况下，该值为0.如果设置更长的默认值，则该行为将根据浏览器/驱动程序的实现定期轮询DOM.

• Implicit Wait - It instructs the web driver to wait for some time by poll the DOM. Once you declared implicit wait it will be available for the entire life of web driver instance. By default the value will be 0. If you set a longer default, then the behavior will poll the DOM on a periodic basis depending on the browser/driver implementation.

Explicit Wait +

Explicit Wait + ExpectedConditions - It is the custom one. It will be used if we want the execution to wait for some time until some condition achieved.