我没有在 React TypeScript 中返回号码

Question

我有这样的代码：

type State = {
  ...
  PromotionIDs: Number[];
  autoAdjustUsage: AutoAdjustUsage[]
};

const InitState: State = {
  ...
  PromotionIDs: [],
  autoAdjustUsage: []
};


    const contracts = this.state[PointsTableType.ELIGIBLE].contracts;
    let result = this.state.PromotionIDs.map(i=>Number(i));
    const autoAdjustPayload = {
      promotionIDs: result,
      usageYears: contracts.map(x => ({ usageYearId: x.usageId, applied: x.appliedPoints,usageType:x.usageType }))
    };

    console.log("this.state.PromotionIDs: ", this.state.PromotionIDs)

当我 console.log PromotionID 时，我没有返回任何号码。有谁知道我该如何解决这个问题？

Answer 1

要在状态中拥有该值，您必须更新状态。

像这样的东西应该有用。

...
let result = this.state.PromotionIDs.map(i=>Number(i));
this.setState({ PromotionIDs: result });
...

我没有在 React TypeScript 中返回号码

I'm not getting back number in react typescript

typescript

reactjs

react-typescript