Overview / Web Technology
Web technology reference for developers
HTML
Structure of content on the web
CSS
Code used to describe document style
JavaScript
General-purpose scripting language
HTTP
Protocol for transmitting web resources
Web APIs
Interfaces for building web applications
Web Extensions
Developing extensions for web browsers
Accessibility
Build web projects usable for all
Web Technology
Web technology reference for developers
Filter sidebar
En este artÃculoSet
Object/Function
Function.displayName
No estándarFunction.length
Function.name
prototype
Function.prototype.arguments
No estándar ObsoletoFunction.caller
No estándar ObsoletoObject.prototype.__defineGetter__()
Obsoleto__defineSetter__()
Obsoleto__lookupGetter__()
Obsoleto__lookupSetter__()
ObsoletoObject.prototype.hasOwnProperty()
Object.prototype.isPrototypeOf()
Object.prototype.propertyIsEnumerable()
Object.prototype.toLocaleString()
Object.prototype.toString()
Object.prototype.valueOf()
Baseline Widely available
This feature is well established and works across many devices and browser versions. Itâs been available across browsers since July 2015.
La propiedad de acceso size
devuelve el número de elementos que hay en el objeto Set
.
El valor de size
es un entero que representa cuantas entradas tiene el objeto Set
. La función de accesso set para size
es undefined
; no se puede cambiar esta propiedad.
size
js
var mySet = new Set();
mySet.add(1);
mySet.add(5);
mySet.add("un texto");
mySet.size; // 3
Especificaciones Specification ECMAScript® 2026 Language Specification .
This page was last modified on 5 ago 2023 by MDN contributors.
View this page on GitHubâ¢
Report a problem with this contentRetroSearch is an open source project built by @garambo | Open a GitHub Issue
Search and Browse the WWW like it's 1997 | Search results from DuckDuckGo
HTML:
3.2
| Encoding:
UTF-8
| Version:
0.7.4