Es6 destruction to display two variables

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Define Chennai and Chandigarh variables using Destructuring so that variables Chennai = ['Tamilnadu'], Chandigarh = ['Punjab', 'Haryana']

What I have tried:

JavaScript

const states = [];
var [Chennai,Chandigarh]=states;
console.log(Chennai);
console.log(Chandigarh);


module.exports = {states}

I have tried that code and i get undefined in  hackerrank??

Posted 11-May-20 5:20am

Member 14828342

Updated 20-Feb-23 20:50pm

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Richard Deeming · Answer 1 · 2020-05-11T06:19:00

Solution 1

Destructuring assignment - JavaScript | MDN[^]

Based on the vague details of the question, you're missing the "rest" pattern from your assignment:

JavaScript

let [Chennai, ...Chandigarh] = states;

But that still won't do anything, since the states array is empty.

Posted 11-May-20 6:19am

Richard Deeming

Member 14832844 · Answer 2 · 2020-05-14T19:22:00

Solution 2

var states = [['Tamilnadu'], ['Punjab', 'Haryana']]
let [Chennai, ...Chandigarh] = states;

module.exports = {states}

Posted 14-May-20 19:22pm

Member 14832844

Updated 14-May-20 19:34pm

Comments

Richard Deeming 15-May-20 10:29am

That won't work. The Chandigarh variable will be set to an array containing the required array, rather than the array itself.

Chandigarh === [ [ 'Punjab', 'Haryana' ] ] !== [ 'Punjab', 'Haryana' ]

Member 14850825 · Answer 3 · 2020-06-01T23:27:00

Solution 5

var states = [['Tamilnadu'], ['Punjab', 'Haryana']];
const [Chennai, Chandigarh] = states;

module.exports = {states}

This would work!

Posted 1-Jun-20 23:27pm

Member 14850825

Updated 1-Jun-20 23:28pm

v2

Member 15190133 · Answer 4 · 2021-05-08T13:52:00

Solution 7

JavaScript

const states = [Chennai, Chandigarh] = [['Tamilnadu'], ['Punjab', 'Haryana']];

module.exports = {Chennai, Chandigarh}

Hi! this solutions works =)

Result in console:

> mocha

✓ returns respective state

✓ returns respective state

2 passing (9ms)

Posted 8-May-21 13:52pm

Member 15190133

Updated 8-May-21 19:36pm

v2