JS: Set.prototype

New in ES2015.

Set.prototype is the value of the property key "prototype" of the function Set.

[see JS: Set Object]

console.log( Set.hasOwnProperty ( "prototype" ) ); // true

Type

Type of Set.prototype is object.

[see JS: Value Types]

// type of Set.prototype
console.log ( typeof Set.prototype === "object" ); // true
console.log ( Object.prototype.toString.call( Set.prototype ) === "[object Set]" ); // true

Parent

Parent of Set.prototype is Object.prototype.

// parent of Set.prototype
console.log ( Object.getPrototypeOf ( Set.prototype ) === Object.prototype ); // true

[see JS: Prototype and Inheritance]

Purpose

Purpose of Set.prototype is to provide methods and properties useful for all set instances.

Set.prototype is the parent of all set instances.

console.log ( Object.getPrototypeOf ( new Set() ) === Set.prototype ); // true

[see JS: the Set Object Tutorial]

Properties

• Set.prototype.constructor
• Set.prototype.size
• Set.prototype.add
• Set.prototype.delete
• Set.prototype.has
• Set.prototype.clear
• Set.prototype.forEach
• Set.prototype.entries
• Set.prototype.keys
• Set.prototype.values
• Set.prototype[Symbol.iterator]
• Set.prototype[Symbol.toStringTag]

Reference

ECMAScript 2015 §Keyed Collection#sec-properties-of-the-set-prototype-object