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Solution Review: Print Numbers Sequentially

Solution Review: Print Numbers Sequentially

This lesson will explain the solution to the problem in the previous lesson.

We'll cover the following...

Solution #

Node.js
const sleep = (i,ms) => new Promise(resolve => setTimeout(() => resolve(i), ms));
async function print() {
  for (let i = 0; i < 10; i++) {
    await sleep(i,Math.random()*1000).then(function(result){
      console.log(result)
    })
  }
}
print()

Explanation #

Let’s look at the sleep function first.

const sleep = (i,ms) =>  new Promise(resolve => setTimeout(() => resolve(i), ms));

It takes two parameters: i and ms, the latter of which is the time in milliseconds. It returns a promise that resolves with value ...