how to merge two arrays into a object using lodash

Question

I am looking for best ways of doing this. I have two arrays:

key = [1,2,3];
value = ['value1', 'value2', 'value3']

The end result I want is an array of map:

[{key: 1, value: 'value1'} ,{key: 2, value: 'value2'}, {key: 3, value: 'value3'}]

How do I do it the most efficient/clean way using lodash? Thanks!

Wainage · Accepted Answer · 2016-05-12 23:53:58Z

3

Here's what you need

_.zipObject(key, value);

Actually ... no.

Pure Javascript can though:

var result = key.map(function(val, index){
  return { key: val, value: value[index] };
});

edited May 12, 2016 at 23:53

answered May 12, 2016 at 23:46

Wainage

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3 Comments

elad.chen Over a year ago

Where the hell is key coming from?

Wainage Over a year ago

@elad.chen key is the key (ahem) name as per OP final result he needed.

wrj Over a year ago

Here is the link to the lodash zipObject method referenced in the answer: lodash.com/docs#zipObject. Also check out lodash.com/docs#zipObjectDeep for nesting property paths.

manish · Accepted Answer · 2020-11-22 12:21:11Z

3

I think your question is answered here.

const key = [1,2,3];
const value = ['value1', 'value2', 'value3']

const output = _.zipObject(key, value);

console.log(output);
/*
[
  {
    "key": 1,
    "value": "value1"
  },
  {
    "key": 2,
    "value": "value2"
  },
  {
    "key": 3,
    "value": "value3"
  }
]
*/

<script src="https://cdn.jsdelivr.net/lodash/4.16.6/lodash.min.js"></script>

edited Nov 22, 2020 at 12:21

manish

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answered Nov 4, 2016 at 22:20

Maksym Sladkov

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2 Comments

Bobby Over a year ago

This should be marked as a duplicate (cannot do this until you have 15 rep, I believe). For that reason, this would be best posted as a comment.

AndrewBenjamin Over a year ago

Actually, after reading the duplicate, thank heaven this was written by someone who made it so clean and quickly readable. The answer in the link just scrambled my brain.

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