check if two arrays contain identical objects - react componentDidUpdate [duplicate]

Answer 1

You can use array.prototype.every :

var players = [
  {
    name: 'Wayne Rooney',
    age: 31
  }, 
  {
    name: 'Lionel Messi',
    age: 29
  },
  {
    name: 'Robbie Fowler',
    age: 42
  }
];

var statePlayers = [
  {
    name: 'Wayne Rooney',
    age: 31
  }, 
  {
    name: 'Lionel Messi',
    age: 29
  },
  {
    name: 'Robbie Fowler',
    age: 42
  }
];

var equals = players.length === statePlayers.length && players.every((e, i) => e.name === statePlayers[i].name && e.age === statePlayers[i].age);

console.log(equals);