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71.当async/await遇到遍历 #71

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wqjiao opened this issue Jan 26, 2021 · 0 comments

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wqjiao commented Jan 26, 2021 •

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for...of

async function getRequest() {
    let all = [];

    for (let item of data) {
        let res = await doSomething(item);
        all.push({id: item, res});
    }

    console.log('complete:', all);
}

Promise.all

async function getRequest() {
    let all = await Promise.all(
        data.map(async item => {
            let res = await doSomething(item);
            return {id: item, res};
        })
    );

    console.log('complete:', all);
}

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