How can I remove the key from an array but keeping the value in the array?

Question

I have an array like this:

language: 
 [
   {added: "English"}
 ]

What I want to do is to remove the key added but I want to keep the value English in the same array.

The result I except:

language: 
 [
  "English"
 ]

By far I have tried something like this:

for(let i  in language) {
 delete language[i].added
}
console.log(language)

This will remove the key and the value as well. How can I remove the key, but keep the value in the same array?

Answer 1

If the objects just consist of a single property, added , you can use Array.map to convert the objects into scalar values:

 data = { language: [ { added: "English" } ] } data.language = data.language.map(o => o.added) console.log(data)

Answer 2

You aren't deleting a key, you're replacing an entry in an array. The old entry is an object with a single key and the new one is it's value:

 language = [ {added: "English"} ] for (let i in language) { language[i] = Object.values(language[i])[0] } console.log(language);