Working with Maps

Working with Maps

After you’ve built your Map, you can use the.has()method to check if a key-value pair exists in your Map by passing it a key.

const members = new Map();

members.set('Evelyn', 75.68);
members.set('Liam', 20.16);
members.set('Sophia', 0);
members.set('Marcus', 10.25);

console.log(members.has('Xavier'));
console.log(members.has('Marcus'));

false
true

And you can also retrieve values from a Map, by passing a key to the.get()method.

console.log(members.get('Evelyn'));

75.68