add key value pair to array of object javascript code example
Example 1: map add key to object in array javascript
const newArr = [
{name: 'eve'},
{name: 'john'},
{name: 'jane'}
].map(v => ({...v, isActive: true}))
Example 2: add key value pair to all objects in array
var arrOfObj = [{
name: 'eve'
}, {
name: 'john'
}, {
name: 'jane'
}];
var result = arrOfObj.map(function(el) {
var o = Object.assign({}, el);
o.isActive = true;
return o;
})
console.log(arrOfObj);
console.log(result);
Example 3: add new key value pair to object javascript
const person = {
name: "Elon Musk"
}
person.age = 49;
console.log(person);