本课内容目前为英文。
Values React does not watch
Sometimes a component must remember something that should not cause a render, like a timer id, or reach a real DOM node to focus it. That is what refs are for.
本课内容目前为英文。
Sometimes a component must remember something that should not cause a render, like a timer id, or reach a real DOM node to focus it. That is what refs are for.