# 2621. Sleep

###### tags: `leetcode 30 days js challenge` `Easy`

[2621. Sleep](https://leetcode.com/problems/sleep/)

### 題目描述

Given a positive integer `millis`, write an asynchronous function that sleeps for `millis` milliseconds. It can resolve any value.

### 範例

**Example 1:**

Input: millis = 100
Output: 100
Explanation: It should return a promise that resolves after 100ms.
let t = Date.now();
sleep(100).then(() => {
  console.log(Date.now() - t); // 100
});

**Example 2:**

Input: millis = 200
Output: 200
Explanation: It should return a promise that resolves after 200ms.

**Constraints**:

- `1 <= millis <= 1000`

### 解答

#### TypeScript

async function sleep(millis: number): Promise<void> {
  return new Promise((resolve) => {
    setTimeout(() => resolve(), millis);
  });
}

> [name=Sheep][time=Mon, May 15, 2023]

### Reference

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