javascript根据值重新排列数组索引

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.

Answer 1

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 } ]