Convert list array to object

# Converting Object to an Array

Finally, with ES2017, it's official now! We have 3 variations to convert an Object to an Array

Array has an array of methods [sorry, bad pun ]. So by converting the object into an array, you have access to all of that. Woohoo

# Time for a story...

# Ancient times

Long long ago, in a far far galaxy, looping over Objects was not so easy. Okay, I'm exaggerating a bit . But I remember whenever I needed to convert an object into an array, I had to do something like this.

I always was so angry and wished there was a better way...

# ES6 - Object.keys

And then ES6 happened! My life changed! We finally have an easier way

Now, there was a built-in method that quickly turns all the keys in my object into an array:

Life was beautiful! But then I became angry again. Why can I only extract the keys, I want my values too! Humans always want more don't we And then ES2017 rolled in...

# Object.values

Hi, I'm ES2017 and I grant you all your wish ‍️. you can now easily extract the values into an array with one method.

# Object.entries

But ES2017 didn't stop there. It gave me more! I grant you BOTH keys and values now, so stop being angry. I was blown away. It turned my frown upside down

Booya

# Object.entries + Destructuring

But then I'm like...nested array . C'mon, that's not fun to work with. ES6 swoops in and like, don't worry! That's why I gave you destructuring!

ES6, that's why you are simply the best

# End of story

Hope you enjoyed my code story-telling time

Now go out there and have some fun with all these amazing Object methods

# Browser Support

Object.keys has the best support. When I say best, it means it supports Internet Explorer . The other, Object.values and Object.entries, unfortunately, don't support Internet Explorer. Luckily, polyfill exists which can improve support.

Polyfill

• MDN: Object.keys
• MDN: Object.values
• MDN: Object.entries

# But wait, there's more...

Your next question might be, now how do I convert the array back to an object. Don't worry, that's covered. There is a new method called Object.fromEntries. It essentially is the opposite of Object.entries.

MDN: Object.fromEntries

Note: This is extremely new, so support will be limited. Keep this in your knowledge box, but maybe wait a bit longer before you put it in your actual toolbox

# Community Input

• @podfeet: I wanted to create an object in a specific form, so I used object.keys to discover the indices of the specific elements I wanted to extract.

# Resources

• MDN Web Docs: Iterating over properties of an object
• MDN Web Docs: Object.keys
• MDN Web Docs: Object.values
• MDN Web Docs: Object.entries
• TC39: Object.fromEntries Proposal

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