Array of objects to array

Question

I have an the following array:

var arr = [{name: "one name"}, {name: "second name"}, {name: "third name"}]

My goal is to have array like this:

var result = ["one name", "second name", "third name"]

I am playing around with something like this, just can't get it right:

var result = [];
for (var i=0; i<arr.length; i++) {
  result[arr[i]] = arr[i].NAME;
}

What I am misisng?

I am looking how to correct my code and use for loop instead of array map

and NAME !== name and you are setting the array's index to a string. — epascarello, Apr 06 '17 at 19:40
@TimConsolazio reduce requires more code when a simple map is one step. — epascarello, Apr 06 '17 at 19:41
Nevertheless...achievable with both depending on your need...less code not always better...etc...really splitting the hair down to the protein there...what are we talking, a few extra chars (really just the accumlator)...and it's still one step... — Tim Consolazio, Apr 06 '17 at 19:58
Requires you to either push or assign to the array. Yeah it works, so does using a chainsaw to cut a pizza. :) Now if it were filtering out items while mapping, I would use reduce to eliminate a loop. — epascarello, Apr 06 '17 at 20:05

Ken · Accepted Answer · 2017-04-06T19:57:57.360

2

This is how to fix your code to do it with a for loop

var arr = [{name: "one name"}, {name: "second name"}, {name: "third name"}]
var result = [];
for (var i=0; i<arr.length; i++) {
  result[i] = arr[i].name;
}

console.log(result);

But using map would be more idiomatic javascript.

edited Apr 06 '17 at 19:57

answered Apr 06 '17 at 19:43

Ken

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score 1 · Answer 2 · answered Apr 06 '17 at 19:40

1

You could map the property values with Array#map.

var array = [{name: "one name"}, {name: "second name"}, {name: "third name"}],
    result = array.map(a => a.name);
    
console.log(result);

answered Apr 06 '17 at 19:40

Nina Scholz

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score 0 · Answer 3 · answered Apr 06 '17 at 19:40

0

You can simply use the .map() command to do something like this:

const result = arr.map(i => i.name)

answered Apr 06 '17 at 19:40

AP.

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Array of objects to array

3 Answers3