JavaScript .get()

Retrieves a value associated with a given key in a Map object.

Syntax

The .get() method accepts a key parameter and checks it against a Map object. If the key exists in the map, the associated value is returned. If not, undefined is returned.

map.get(key);

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Example

Values are retrieved by their keys from Map objects using the .get() method.

const fruits = new Map([
  ['Apples', 5],
  ['Oranges', 8],
]);

console.log(fruits.get('Apples')); // Output: 5
console.log(fruits.get('Oranges')); // Output: 8
console.log(fruits.get('Bananas')); // Output: undefined

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Codebyte Example

The code below uses a new Map that contains purchase orders. In this example:

• Samantha will get the next purchase order that she needs to fill from the map using the .get() method.
• Once the purchase order has been worked, Samantha will remove it from the map using the .delete() method.

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