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Victor Peter
Victor Peter

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Convert a 2D array to an object in JavaScript

#javascript #webdev #programming

Here is a brief tutorial about how to convert JavaScript 2D array to a array of objects.

Here is a array we want to convert:

let arrToObj = [ ["name", "Victor"], ["language", "JavaScript"], ["country", "Nigeria"], ["mood", "Happy Mode"] ];
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Here is the code to convert the 2d array to an array of objects.

const result = arrToObj.map(arr => { let obj = {}; obj[arr[0]] = arr[1]; return obj }); console.log(result);
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The result will be:

[ { name: 'Victor' }, { language: 'JavaScript' }, { country: 'Nigeria' }, { mood: 'Happy Mode' } ]
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Top comments (2)

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jonrandy profile image
Jon Randy 🎖️ •

Your code is turning a 2D array into an array of objects, not a single object.

This will turn it into an object:

const result = Object.fromEntries(arrToObj)
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Or, if you want more explicit but likely slower code:

const result = arrToObj.reduce( (obj, [k, v]) => ((obj[k] = v), obj), {} )
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veektor_v profile image
Victor Peter •

Owww, my bad, sorry. I saved the post as a draft the first time I wroe it, so when I came back to publish it, I just looked at the code and not the texts before the code, sorry. I wanted to turn it into an array, but your solution is really great...