javascript - TypeError：weeklyData.map 不是函数

Question

import { useWheather } from "../../contexts/WheatherContex";

import FeatureForcastItem from "./FeatureForcastItem";

function FutureForecast() {
    const { weeklyData } = useWheather();

    console.log("WEEKLYDATA in COMPONENTS", weeklyData);

    return (
        <div id="future" className="wrapper">
            {weeklyData.map((day, i) => {
                return <FeatureForcastItem key={i} dayInfo={day} />;
            })}
        </div>
    );
}

export default FutureForecast;

不是这样工作的，但如果删除weeklyData 部分它可以工作，我们可以从console.log 看到数据weeklyData

import { useWheather } from "../../contexts/WheatherContex";

// import FeatureForcastItem from "./FeatureForcastItem";

function FutureForecast() {
    const { weeklyData } = useWheather();

    console.log("WEEKLYDATA in COMPONENTS", weeklyData);

    return (
        <div id="future" className="wrapper">
            {/* {weeklyData.map((day, i) => {
                return <FeatureForcastItem key={i} dayInfo={day} />;
            })} */}
        </div>
    );
}

export default FutureForecast;

我怎样才能通过这个错误，为什么它会发生！

标签： javascripttypeerror