Event objects are left in the global window object.

事件对象留在全局的window对象中。

youdao

Event objects are now extended with a collection of instance methods.

事件对象现在扩展了一组实例方法。

youdao

Event objects are now extended with a collection of instance methods.

事件对象现在扩展了一组实例方法。

youdao