Answers for "how to add key value pair in object javascript in map function"

map add key to object in array javascript

const newArr = [
  {name: 'eve'},
  {name: 'john'},
  {name: 'jane'}
].map(v => ({...v, isActive: true}))

how to add key value pair in object

// program to add a key/value pair to an object

const person = {
    name: 'Monica',
    age: 22,
    gender: 'female'
}

// add a key/value pair
person.height = 5.4;

console.log(person);