从DOM中删除一个元素（及其子元素）

Question

Via the MDN reference I want to simply do:

parent_element.removeChild(child_element);

However, in this particular case child_element has its own child elements.

Can I assume that this will not cause any problems and that they too will be removed.

The examples given in the reference did not make complete sense.

Answer 1

Yes when you remove an element from the DOM, all of its children are removed with it. If you are working with a modern browser, this is pretty safe. Older browsers tended to get memory leaks if you did not first remove all your event handlers before removing the elements.

Answer 2

Yes, all elements that are childs of a removed element are removed. You don't need to implement a deep removal yourself.

Answer 3

是的，您可以假设孩子的孩子将被遣散

Answer 4

如果这些子项没有被删除，则除非有人将它们放置在其他地方，否则它们在DOM中的位置或方式可能存在。