Sleep in JavaScript
Given a positive integer millis, write an asyncronous function that sleeps for millis milliseconds. It can resolve any value.
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.
/**
* @param {number} millis
*/
async function sleep(millis) {
return new Promise((resolve) => {
setTimeout(() => {
resolve();
}, millis);
});
}
let t = Date.now();
sleep(100).then(() => console.log(Date.now() - t)); // Output: 100