Answers for "keys and values of object inside the array"

retrieve object array value based on key

let arr = [
    { name:"string 1", value:"this", other: "that" },
    { name:"string 2", value:"this", other: "that" }
];

let obj = arr.find(o => o.name === 'string 1');

console.log(obj);

js array of objects get a specific key from all objects

let users = [
  {
    name: 'John',
    age: 20,
  },
  {
    name: 'Richard',
    age: 25,
  }
];

let names = users.map(user => user.name);

// ['John', 'Richard]