convert JSON array of key value pairs to JSON Array of strings in Javascript

Question

so i have a JSON Object [{"key1":"val1","key2":"val2"},{"key1":"val1","key2":"val2"}]

and i essentially need to remove the keys so the output looks like [["val1","val2"],["val1","val2"]] in Javascript.

short of iterating through the array and then iterating through all the properties and mapping to a new JSON object is there any way i can remove the keys from the object, and turn the values in to a list in an array?

please no string splicing/ regex.

Thanks.

Does the order of the array elements matter? Is it OK if it's [["val2", "val1"], ["val1", "val2"]]? — Barmar
– Barmar, Commented Jan 6, 2017 at 20:57
yes it does but the accepted answer by @BrunoLM does preserve order. — OOPMichael
– OOPMichael, Commented Jan 6, 2017 at 22:15
No it doesn't, since the objects themselves don't preserve order. — Barmar
– Barmar, Commented Jan 6, 2017 at 22:42
ahhh you are correct, thanks!@ i didn't notice it, b/c the first few arrays contained the same keyed data. — OOPMichael
– OOPMichael, Commented Jan 6, 2017 at 22:51

mehdi · Accepted Answer · 2025-09-01 08:53:00Z

6

Using ES2015 (ES6)

const arr = [{"key1":"val1","key2":"val2"},{"key1":"val1","key2":"val2"}]
var newArr=arr.map(o => Object.values(o));

console.log(newArr);

See

edited Sep 1 at 8:53

mehdi

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answered Jan 6, 2017 at 20:30

BrunoLM

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Comments

Adam Azad · Accepted Answer · 2017-01-06 20:31:38Z

0

If you still need old browser support--pre ES6

var arr = [{"key1":"val1","key2":"val2"},{"key1":"val1","key2":"val2"}];

arr = arr.map(function(o){
   var a = [];
   for(var i in o){
      a.push(o[i])
   }
   return a;
});
console.log(arr);

answered Jan 6, 2017 at 20:31

Adam Azad

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Comments

Lockless · Accepted Answer · 2017-01-06 20:33:22Z

0

You need to loop over the object and make new arrays.

for (var i = 0; i < yourobject.length; i++) {
    var myArray = [];
    for (var key in yourobject) {
         myArray.push(yourobject[key]
    }
    console.log(myArray)
}

answered Jan 6, 2017 at 20:33

Lockless

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Comments

KMA · Accepted Answer · 2017-01-07 04:45:27Z

0

This should do it:

const arr = [{"key1":"val1","key2":"val2"},{"key1":"val1","key2":"val2"}];

const newArr = arr.map(obj => Object.values(obj));

answered Jan 7, 2017 at 4:45

KMA

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