How to create arrays from array [closed]

Question

I am a JavaScript beginner and I am trying make two different arrays with values from one main array.

My main array looks like:

0: Array(3) [ 2011, 127072.7, 51584 ] 1: Array(3) [ 2012, 125920.3, 59974 ] 2: Array(3) [ 2013, 129305.4, 15468 ] 3: Array(3) [ 2014, 135364, 84554 ] 4: Array(3) [ 2015, 136757, 98754 ] 5: Array(3) [ 2016, 155653.5, 155548 ] 6: Array(3) [ 2017, 164130.5, 284848 ] 

And i need create two arrays, first looking like:

0: Array(2) [ 2011, 127072.7] 1: Array(2) [ 2012, 125920.3] 2: Array(2) [ 2013, 129305.4] 3: Array(2) [ 2014, 135364] 4: Array(2) [ 2015, 136757] 5: Array(2) [ 2016, 155653.5] 6: Array(2) [ 2017, 164130.5] 

(first and second value)

and second like:

0: Array(2) [ 2011, 51584] 1: Array(2) [ 2012, 59974] 2: Array(2) [ 2013, 15468] 3: Array(2) [ 2014, 84554] 4: Array(2) [ 2015, 98754] 5: Array(2) [ 2016, 155548] 6: Array(2) [ 2017, 284848] 

(first and third value)

I trying splice, filter etc. but I don't know, how to start.

It is not necessary to write me an exact solution, but only steps how to do it.

Answer 1

You could take a dynamic approach and get all items of the array after the key value for each new array.

var data = [[2011, 127072.7, 51584], [2012, 125920.3, 59974], [2013, 129305.4, 15468], [2014, 135364, 84554], [2015, 136757, 98754], [2016, 155653.5, 155548], [2017, 164130.5, 284848]],      [first, second] = data.reduce(          (r, [k, ...a]) => {              a.forEach((v, i) => r[i].push([k, v]));              return r;          },          Array.from({ length: Array.isArray(data[0]) ? data[0].length - 1 : 0 }, () => [])      );    console.log(first);  console.log(second);

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