Combine multiple array of object with diffrent key

Question

i have 2 array of object with diffrent key each other, i want to combine those array become 1 array,

Array of object 1

0:{materi: "materi1"}
1:{materi: "materi2"}
2:{materi: "materi3"}
3:{materi: "materi4"}

Array of object 2

0:{colour: "#FFEBCD"}
1:{colour: "#8A2BE2"}
2:{colour: "#DEB887"}
3:{colour: "#5F9EA0"}

what i have done is here push, concat but doesnt give me the output that i want to

console.log(mapped, 'mapped') 
console.log(color, 'color')
//console.log(mapped.push(color))
//console.log(mapped.push.apply(mapped, color))
// console.log(mapped.concat(color))

this is the output that i want

[{
  "color": '#E9967A',
  "materi": "Laurie Henderson"
},
{
  "color": '#8B0000',
  "materi": "Toni Ferrell"
},
{
  "color": '#9932CC',
  "materi": "Christi Summers"
},
{
  "color": '#FF8C00',
  "materi": "Adams Gray"
},
{
  "color": '#556B2F',
  "materi": "Maricela Bernard"
}]

Your input and output have different values. Also have you tried anything? — Rajesh Dixit
– Rajesh Dixit, Commented Nov 23, 2017 at 6:11
@Rajesh sorry the output just only for example that i want to so ignore the values. i tried mapped, push and concat but doesn't give me the result that i want to — Freddy Sidauruk
– Freddy Sidauruk, Commented Nov 23, 2017 at 6:14

Rohit Agrawal · Accepted Answer · 2017-11-23 06:31:28Z

1

var array1 = [{materi: "materi1"},
              {materi: "materi2"},
              {materi: "materi3"},
              {materi: "materi4"}];
var array2 = [{colour: "#FFEBCD"},
              {colour: "#8A2BE2"},
              {colour: "#DEB887"},
              {colour: "#5F9EA0"}];
var newArray = array1.map(function(val, ind){
    return {
        materi:val.materi,
        colour:array2[ind].colour
    }
})

edited Nov 23, 2017 at 6:31

answered Nov 23, 2017 at 6:14

Rohit Agrawal

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1 Comment

Freddy Sidauruk Over a year ago

wow your so fast edit the answer, it give me knowledge about data in javasacript

Martin Chaov · Accepted Answer · 2017-11-23 06:23:20Z

1

You need to create new array with combination of the properties, they cannot automatically merge into new objects.

One way to do that is:

var arr1 = [{colour: "#FFEBCD"}], arr2 = [{materi: "materi1"}]; // your arrays

var combined = arr1.map(function(element, index){
    return {
        color: element.color,
        materi: arr2[index].materi
    }
})

Without further explanation on how you want the properties to be merged into new objects I think that's the best answer that can be given.

Also it is a bit dangerous as we cannot be sure that both arrays have the same length - so that needs to be handled somehow as well.

answered Nov 23, 2017 at 6:23

Martin Chaov

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1 Comment

Freddy Sidauruk Over a year ago

and yes those array doesn't have same length before combine both already cut one of them has same length, cause one array i set for 20 and the other dynamic from API, thanks or correction

Hassan Imam · Accepted Answer · 2017-11-23 06:17:11Z

0

You can use array#map to merge two array. Use value from the first array and using the index to get the value from the second array.

const materials = [{materi: "materi1"},{materi: "materi2"},{materi: "materi3"},{materi: "materi4"}],
      colors = [{colour: "#FFEBCD"},{colour: "#8A2BE2"},{colour: "#DEB887"},{colour: "#5F9EA0"}];
      
const result = materials.map(({materi}, index) => ({'color' : colors[index].colour, materi}));
console.log(result);

answered Nov 23, 2017 at 6:17

Hassan Imam

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1 Comment

Rajesh Dixit Over a year ago

Its really going to be difficult for OP to understand

Mikhail Katrin · Accepted Answer · 2017-11-23 06:20:06Z

0

You can use Object.assign() to merge each pair together.

var materials = [{materi: "materi1"},{materi: "materi2"},{materi: "materi3"},{materi: "materi4"}];
var colors = [{colour: "#FFEBCD"},{colour: "#8A2BE2"},{colour: "#DEB887"},{colour: "#5F9EA0"}];

var merged = materials.map(function(m, i) {
  return Object.assign({}, m, colors[i]);
})

console.log(merged)

Or using es6:

let materials = [{materi: "materi1"},{materi: "materi2"},{materi: "materi3"},{materi: "materi4"}];
let colors = [{colour: "#FFEBCD"},{colour: "#8A2BE2"},{colour: "#DEB887"},{colour: "#5F9EA0"}];

let merged = materials.map((m, i) => Object.assign({}, m, colors[i]))

console.log(merged)

answered Nov 23, 2017 at 6:20

Mikhail Katrin

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