Map.prototype.delete()

The delete() method of {{jsxref("Map")}} instances removes the entry specified by the key from this Map.

{{InteractiveExample("JavaScript Demo: Map.prototype.delete()")}}

```js interactive-example const map = new Map(); map.set("bar", "foo");

console.log(map.delete("bar")); // Expected result: true // True indicates successful removal

console.log(map.has("bar")); // Expected result: false

## Syntax

```js-nolint
mapInstance.delete(key)

Parameters#

• key
• : The key of the entry to remove from the Map object. Object keys are compared by reference, not by value.

Return value#

true if an entry in the Map object has been removed successfully. false if the key is not found in the Map.

Examples#

Using delete()#

const myMap = new Map();
myMap.set("bar", "foo");

console.log(myMap.delete("bar")); // Returns true. Successfully removed.
console.log(myMap.has("bar")); // Returns false. The "bar" element is no longer present.

Specifications#

{{Specifications}}

Browser compatibility#

{{Compat}}

See also#

• {{jsxref("Map")}}
• {{jsxref("Map.prototype.clear()")}}
• {{jsxref("Map.prototype.get()")}}
• {{jsxref("Map.prototype.set()")}}
• {{jsxref("Map.prototype.has()")}}