<pre class="shiki github-dark shaku"><code>/** * @param {() =&gt; Promise&lt;any&gt;} fetcher * @param {number} maximumRetryCount * @return {Promise&lt;any&gt;} */function fetchWithAutoRetry(fetcher, maximumRetryCount) { // your code here return new Promise((resolve, reject) =&gt; { let count = 0; const attempt = () =&gt; { fetcher().then(resolve).catch(err =&gt; { count++; if (count &lt;= maximumRetryCount) { attempt(); } else { reject(err); } }) } attempt(); })}</code></pre>

promise解法 注意条件判断<=maxTry，先计数(判断是否有额度)，再重新调用。如果一直失败的话，最终实际调用次数应该是maxTry+1

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Paypal

For a web application, fetching API data is a common task. But the API calls might fail because of Network problems. Usually we could show a screen fo…

Ideas and Concepts

Promise / Async functions

65. add comma to number

63. create `_.cloneDeep()`

64. auto-retry Promise on rejection