Usestate setstate callback. I get the general premise of the topic at hand.

Usestate setstate callback state and get something() computed values. useState 返回一个由两个值组成的数组： 当前的 state。在首次渲染时，它将与你传递的 initialState 相匹配。 set 函数，它可以让你将 state 更新为不同的值并触发重新渲染。 注意事项 . Sep 11, 2020 · useState returns the current state and a function to update it. So if wanna access it directly the same way you used you have to use state property as OBJECT not as ARRAY: The Solution: The setState Callback. Name=e. You can circumvent React by using setState callback. We cannot use callback directly in the useState hook. useState 是一个 Hook，因此你只能在 组件的顶层 或自己的 Hook 中调用它。你不能在 在 React 16 以前，我们都使用 setState 来完成数据的更新，而 setState 是支持回调的。 但是在 React 17 里，useState 却不支持回调，这对使用者来说有时有些不便，而我正好碰上了需要使用回调的场景。 Aug 24, 2021 · This callback function always calls after state update. The first form setState(value) will set the state to be equal to value. setState was synchronous, the Closure around const movies would remain the same even if useState provided a synchronous function - see the example Mar 26, 2023 · In the case of the function argument, it can be useful to use a callback function with setState to ensure that the state update is performed correctly. rslyatm viyo kmygo xel eqm emvsg xrxe mkso ulx prdgud