map an array to string list code example
Example 1: use map to loop through an array
let squares = [1,2,3,4].map(function (val) {
return val * val;
});
Example 2: map a keys from an array in a separate arraylist javascript
const myUsers = [
{ name: 'shark', likes: 'ocean' },
{ name: 'turtle', likes: 'pond' },
{ name: 'otter', likes: 'fish biscuits' }
]
const usersByLikes = myUsers.map(item => {
const container = {};
container[item.name] = item.likes;
container.age = item.name.length * 10;
return container;
})
console.log(usersByLikes);