What is the output of the following? “`js const promises = [1,2,3].map(n => new Promise(resolve => setTimeout(() => resolve(n * 2), n * 100)) ); Promise.all(promises).then(results => console.log(results)); “`

Question

JavaScript Professional — Medium

What is the output of the following? “`js const promises = [1,2,3].map(n => new Promise(resolve => setTimeout(() => resolve(n * 2), n * 100)) ); Promise.all(promises).then(results => console.log(results)); “`

Accepted Answer

The output will be [2, 4, 6] in the original order because the promises are resolved in the order they were created, not in the order of their timeout durations.