How To sort an array of nested objects in javascript

Question

I have an array like this

var array = [{
    order: 3,
    sub - array: [{
        order: 2
    },{
        order: 1
    }]
},{
    order: 2,
    sub - array         


        

Answer 1

Use Array.prototype.sort and call it on array and subsequently on each element of array with an appropriate compare function. Something like this should work:

array.sort(function (e1, e2) {
  return (e1.order - e2.order);
});

array.forEach(function(e) {
  e["sub-array"].sort(function (e1, e2) {
    return (e1.order - e2.order);
  });
});