JSFiddle - React, Tailwind, and code Playground

JavaScript

function sort(arr) {
  arr.sort(function(o1, o2) {
    var x = o1.age;
    var y = o2.age;
    if (x < y) {
      return -1;
    } else if (x > y) {
      return 1;
    } else {
      return 0;
    }
  })

  console.log(arr);
}

sort([{
  name: 'zhangsan',
  age: 123
}, {
  name: 'lisi',
  age: 10
}, {
  name: 'wangwu',
  age: 20
}])