<html><head></head><body> <script> var persons = [ { name: "Harry", age: 14 }, { name: "Ethan", age: 30 }, { name: "Peter", age: 21 }, { name: "Clark", age: 42 }, { name: "Alice", age: 16 } ]; // Sort by age persons.sort(function (a, b) { return a.age - b.age; }); console.log(persons); // Sort by name persons.sort(function(a, b) { var x = a.name.toLowerCase(); // ignore upper and lowercase var y = b.name.toLowerCase(); // ignore upper and lowercase if(x < y) { return -1; } if(x > y) { return 1; } // names must be equal return 0; }); console.log(persons); </script></body></html>