angularjs promise .then() to run sequentially inside a for loop

SAMER SAEID answered on May 11, 2022 Popularity 1/10 Helpfulness 1/10

answer angularjs promise .then() to run sequentially inside a for loop

angularjs promise .then() to run sequentially inside a for loop

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function somethingAsync(value) {
    return new Promise(res => setTimeout(res, 500, value * value));
}

function processInputInSeries(input) {
    function processNext(index, input, results) {
        if (index >= input.length) return results;
        return somethingAsync(input[index]).then(function (result) {
            return processNext(index + 1, input, [...results, result]);
        });
    }

    return processNext(0, input, []);
}

const resultPromise = processInputInSeries([1,2,3]);
resultPromise.then(function(results) { console.log(results) });

Popularity 1/10 Helpfulness 1/10 Language javascript

Source: Grepper

Tags: angularjs for-loop javascript promise

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Contributed on May 11 2022

SAMER SAEID

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angularjs promise .then() to run sequentially inside a for loop

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