js for await


async function test() {  
    // Regular Iterator
    for (const i of list) ...

    // Async Iterator
    for await (const i of Promise list) ...
}


// example from: https://jakearchibald.com/2017/async-iterators-and-generators/
  async function* asyncRandomNumbers() {
    const url = "https://www.random.org/integers/?num=1&min=1&max=100&col=1&base=10&format=plain&rnd=new";

    while (true) {
        const response = await fetch(url);
        const text = await response.text();
        yield Number(text);
    }
}

(async function() {
    let i = 0;

    for await (const number of asyncRandomNumbers()) {
        console.log(++i, "=>", number);
        if (i === 10) break;
    }
})();

// 1 "=>" 65
// 2 "=>" 62
// ...

NAVER D2

https://d2.naver.com/helloworld/4007447

js for await

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