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JavaScript

Posted by Grey Elerson
Grey Elerson
5,089 Points

Why are there two return statements in this Promise callback?

I was following along the "Handle Multiple Promises with Promise.all" lesson, and I noticed that in the example, the teacher placed two return statements. In my experience, the function will stop execution at the first one. So what is the point of the Promise.all() in that function?

https://www.dropbox.com/s/y2sjv38mm9wwh2p/Screenshot%202020-06-24%2022.02.07.png?dl=0

1 Answer

Clayton Perszyk
MOD
Clayton Perszyk
Treehouse Moderator 48,850 Points
Clayton Perszyk
Clayton Perszyk
Treehouse Moderator 48,850 Points

You actually have two separate functions/methods, one just happens to be nested in another function.

function getProfiles(json) {
   const = profiles.people.map(person => {
       return getJSON(wikiUrl + person.name) // this return is for the callback function within the array map method
   });
   return Promise.all(profiles); // this is the return for the getProfiles function
}