Obj filter by field

by Alexey Zakharov

JavaScript

var users = [{
  name: "Вася",
  surname: 'Иванов',
  age: 20
}, {
  name: "Петя",
  surname: 'Чапаев',
  age: 25
}, {
  name: "Маша",
  surname: 'Медведева',
  age: 18
}];
users.sort(byField('name'));
users.forEach(function(user) {
  alert( user.name );
}); // Вася, Маша, Петя

users.sort(byField('age'));
users.forEach(function(user) {
  alert( user.name );
}); // Маша, Вася, Петя


function byField(field) {
	return function(a, b) {
    return a[field] > b[field] ? 1 : -1;
  }
}