ES11的Promise.allSettled方法报错 TypeError: object is not iterable

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    <title>ES11的Promise.allSettled方法</title>
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    <script type="text/javascript">
        // 声明 2 个Promise
        const p1 = new Promise((resolve, reject) => {
            setTimeout(() => {
                resolve("商品数据 - 1");
            }, 1000)
        });
        const p2 = new Promise((resolve, reject) => {
            setTimeout(() => {
                resolve("商品数据 - 2");
            }, 1000)
        });

        // 调用 allSettled 方法
        const res = Promise.allSettled([p1, p2]);
        console.log(res); // [[PromiseState]]: "fulfilled" [[PromiseResult]]: Array(2) // Array(2)包含的是两个 Promise 实例 的 resolve 结果
    </script>
</body>

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如果我们在执行 Promise.allSettled(p1, p2); 就会报错

Uncaught (in promise) TypeError: object is not iterable (cannot read property Symbol(Symbol.iterator));

这是因为, Promise.allSettled() 的入参要求为 数组, Promise.allSettled([p1, p2]); 就可以了

此外,另一个方法 Promise.all(); 入参要求也是 数组,Promise.all([p1, p2]); 但是两个函数的返回结果不同

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转载自blog.csdn.net/vampire10086/article/details/109022070
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