How do I add items to a map in JavaScript?

How do I add items to a map in JavaScript?

You can add items to a map using the set() method. For example: myMap.set(key, value);.

Can you show me an example with actual values?

Sure! Here's an example: let myMap = new Map(); myMap.set('name', 'Alice'); This adds a key 'name' with the value 'Alice'.

What if I want to add multiple items at once?

You can use a loop to add multiple items. For example: [['key1', 'value1'], ['key2', 'value2']].forEach(([key, value]) => myMap.set(key, value));.

Is there a way to check if a key exists in the map?

Yes! You can use the has() method. For example: myMap.has('name'); returns true if 'name' exists.