JavaScript: Map.prototype

By Xah Lee. Date: . Last updated: .

New in JS2015.

Map.prototype is the value of the property key "prototype" of the function Map. [see Map Object]

console.log(Map.hasOwnProperty("prototype"));

Type

Type of Map.prototype is Object .

console.log(typeof Map.prototype === "object");

Parent

Parent of Map.prototype is Object.prototype .

console.log(Reflect.getPrototypeOf(Map.prototype) === Object.prototype);

Purpose

Purpose of Map.prototype object is to provide methods and properties useful for all map instances.

Map.prototype is the parent of all map instances.

console.log(Reflect.getPrototypeOf(new Map()) === Map.prototype);

[see the Map Object Tutorial]

Properties

Value Properties

Function Properties

get/set

loop

JavaScript Map Object

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