javascript rearrange array index based on value

Question

I have an array that look like this

var array = [{id:5},{id:1},{id:2}]

I want to rearrange the array index based on the id value from lowest to highest so it becomes

var newarray = [{id:1},{id:2},{id:5}]

I have been looking at sort() but I dont quite understand the logic behind it.

@AndrewLi Yup, the only difference being that instead of returning a - b, since the array contains objects you would return a.id - b.id — Rohan Rao
– Rohan Rao, Commented Oct 19, 2016 at 0:11
@RohanRao I never said the documentation gave an exact solution; I said it explained the sort function. They OP can apply it to their needs — Andrew Li
– Andrew Li, Commented Oct 19, 2016 at 0:12

choz · Accepted Answer · 2016-10-19 00:38:56Z

2

To achieve this, you can use native array sort function which you can pass a callback as a compare function.

var array = [{id:5},{id:1},{id:2}];

array.sort(function(a, b) {
  return a.id - b.id;
});

console.log(array); //[{"id": 1 }, {"id": 2 }, {"id": 5 } ]

answered Oct 19, 2016 at 0:38

choz

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