combining two set of data in javascript

Question

Im trying to combine two sets of data.

var a = [{ Id: 1, Name: 'foo' },
  { Id: 2, Name: 'boo' }];

var b = [{ Id: 3, Name: 'doo' },
        { Id: 4, Name: 'coo' }];

Most of question here i found is only a normal array.

I've tried Object.assign(a, b); but it only returns the b value.

The a and b data is from the server side.

Thanks for the help.

`const c = [...a, ...b]` or `const c = a.concat(b);` – CertainPerformance May 16 '18 at 04:09 — CertainPerformance, May 16 '18 at 04:09
let newArray = a.concat(b); – Luiz Chagas Jr May 16 '18 at 04:10 — Luiz Chagas Jr, May 16 '18 at 04:10
oh god. just a simple syntax. thanks for your help. – Ismael Bin Azman May 16 '18 at 04:14 — Ismael Bin Azman, May 16 '18 at 04:14

score 1 · Answer 1 · answered May 16 '18 at 04:15

1

Try array concat

var a = [{ Id: 1, Name: 'foo' },
  { Id: 2, Name: 'boo' }];

var b = [{ Id: 3, Name: 'doo' },
        { Id: 4, Name: 'coo' }];
let c = a.concat(b);

console.log(c);

answered May 16 '18 at 04:15

Mohammad Ali Rony

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score 1 · Answer 2 · answered May 16 '18 at 04:26

Using spread syntax

var a = [{ Id: 1, Name: 'foo' },
  { Id: 2, Name: 'boo' }];

var b = [{ Id: 3, Name: 'doo' },
        { Id: 4, Name: 'coo' }];

c = [...a, ...b];

Note: Spread syntax is not supported by all browsers , its ok if you use es6/5 compiler though like babel. See Spread

Another option is

combining two set of data in javascript

2 Answers2