164 docs tagged with "Object"

.bind() is defined as: Function Instance Method to fix this keyword for Method (with optional Argument), for new standalone fn. Topics on: . Read more: JS, JS L

.call() is defined as: Function Instance Method to invoke function with explicit this keyword [and optional Argument]. Topics on: .call syntax, !snippet Method

.concat() is defined as: to return new merged Array. Topics on: !syntax arr1.concat(value0?: any ..., valueN?: any): array. Read more: JS, JS Language, Object,

.fill() is defined as: to mutate array by fill with static value, from start (index) up to (not incl) end (index). Topics on: !syntax (method) fill(value: any ,

.flat() is defined as: to return new Array with sub-array elements moved up to optional depth. Topics on: (method) flat(depth?: 1): array, !equivalent to .reduc

.json() is defined as: async Chain Method to return Promise parse as JSON format. Topics on: . Read more: JS, JS Language, Object, Promise, Promise Lifecycle, C

.reduce() is defined as: to return single acculated value from array after iterating over its elements. Topics on: . Read more: JS, JS Language, Object, Array,

.slice() is defined as: Array Instance Method to return new shallow copy portion of Array. Topics on: params. Read more: JS, JS Language, Object, Array, Array I

.then() is defined as: async Chain Method to execute Callback Function on Fullfill, auto-pass Promise Value as Argument. Topics on: .json(). Read more: JS, JS L

.toString() is defined as: to return string of Source Code of calling function. Topics on: Override (Polymorphism) Object.prototype.toString method. Read more:

(?:abc) is defined as: regex Non-Capturing Group to prevent grouping reference. Topics on: . Read more: JS, JS Language, Object, Reg Exp, Reg Exp Syntax, Regexp

(?<!abc)n is defined as: Negative Lookbehind to match n only if abc not exist before. Topics on: . Read more: JS, JS Language, Object, Reg Exp, Reg Exp Syntax,

(?<=abc)n is defined as: Positive Lookbehind Assertion to match n only if abc exists before. Topics on: . Read more: JS, JS Language, Object, Reg Exp, Reg Exp S

[:blank:] is defined as: RegExp Character Class to match space or tab char. Topics on: . Read more: JS, JS Language, Object, Reg Exp, Reg Exp Syntax, Regexp Bod

[:punct:] is defined as: RegExp Character Class to match punctuation char. Topics on: . Read more: JS, JS Language, Object, Reg Exp, Reg Exp Syntax, Regexp Body

[:space:] is defined as: RegExp Character Class to match space char. Topics on: . Read more: JS, JS Language, Object, Reg Exp, Reg Exp Syntax, Regexp Body, Char

\
b is defined as: RegExp Assertion to match only at boundary of word (beginning or end of word). Topics on: ⚠ \b also stands for escaped backspace.

\
n is defined as: RegExp back ref to numbered Capture Group. Topics on: . Read more: JS, JS Language, Object, Reg Exp, Reg Exp Syntax, Regexp Body, G

\
p is defined as: Unicode Property Escape. Topics on: Unicode Character Property. Read more: JS, JS Language, Object, Reg Exp, Reg Exp Syntax, Regexp

\
w is defined as: 'Word' Character Class Escape === [A-Za-z0-9_]. Topics on: !gotcha includes numbers too!!. Read more: JS, JS Language, Object, Reg

Accessor is defined as: Setter/ Getter Method to write/read Accessor Property in Object. Topics on: . Read more: JS, JS Language, Declaration, Literal, Object L

Anon Function is defined as: function w/o Identifier. Topics on: . Read more: JS, JS Language, Object, Function, Anon Function, Identifier |FullStack Wiki by RJ

Args Object is defined as: Object to contain all Argument pass into function (for current EC). Topics on: . Read more: JS, JS Concepts, JS Engine, Call Stack, E

Array is defined as: Global Object Prototype for Array data type. Topics on: Array static methods, Array instance methods, Array instance properties. Read more:

Array is defined as: ordered sequence of elements of any type (Primitive || Object). Topics on: Array, resizable, can contain mix of different data types, Zero-

Array instance methods. Topics on: .concat(), .fill(), .flat(), .slice(), .reduce(). Read more: JS, JS Language, Object, Array, Array Instance Methods| Dev Wiki

Array static methods. Topics on: Array.from(), Array.isArray(). Read more: JS, JS Language, Object, Array|FullStack Wiki by Roger J

Assertion is defined as: RegExp Syntax to define boundary of lines/words. Topics on: ^, $, |, \b, \B, n(?=abc), n(?!abc), (?<=abc)n, (?<!abc)n. Read more: JS,

Backing Instance is defined as: Object (created in memory) to store & access data. Topics on: created React class instances to track changes over time, React El

Binding is defined as: (formal ECMAScript term for Variable) Identifier to catch & hold Value 🐭. Topics on: . Read more: JS, JS Language, Object, Function, Fun

both same number. Topics on: Object.is() same number for. Read more: JS, JS Language, Object, Object Static Method, Objectis|FullStack Wiki by Roger J

Capture Group. Topics on: (?<hashes>#+). Read more: JS, JS Language, Object, Reg Exp, Reg Exp Syntax, Regexp Body, Group, Capture Group |FullStack Wiki by Roger

Character Class is defined as: RegExp Syntax [] to wrap Class Range or Pattern Character. Topics on: Class Range, [abc], [^abc], [0-9], [A-z], JS doesn't suppor

Character Class Escape is defined as: Character Escape for set of characters. Topics on: \d, \D, \w, \W, \s, \S, \p. Read more: JS, JS Language, Object,

Character Escape is defined as: escape to match single fixed character. Topics on: Control Escape, Character Class Escape, Unicode/other escape. Read more: JS,

Class is defined as: Blueprint to create Object Instance. Topics on: Instantiation. Read more: JS, JS Concepts, Multi Paradigm, Paradigm, OOP, Classical OOP Con

Class Range is defined as: a set of characters express by hypen pattern: a-z. Topics on: need to escape ^ \ - ] (if ^ first) (if - not first/last). Read more:

Constructor Function is defined as: function to programmatically create Object (& link via __proto__ after Instantiation with new). Topics on: !cannot use arrow

Consume is defined as: (process) to use Settled Promise to get a result. Topics on: .then(), .catch(), .finally(). Read more: JS, JS Language, Object, Promise,

Control Escape is defined as: Character Escape for Control Character. Topics on: \n, \r, \t, \cA, \cZ, \f, \v. Read more: JS, JS Language, Object, Reg Ex

createContext() is defined as: Context API function to create Context Object. Topics on: . Read more: React, React API, Context API, Function, Context, Object

Currier Function is defined as: function to pass/return another Callback Function. Topics on: . Read more: JS, JS Language, Object, Function, Currier Function,

Date is defined as: Interface Constructor Function for new date object (with epoch). Topics on: new Date(), epoch, Date.now(), Intl.DateTimeFormat('en-GB').form

Date.now() is defined as: to return epoch number. Topics on: . Read more: JS, JS Language, Object, Date, Epoch, Number|FullStack Wiki by Roger J

delete is defined as: JS Operator to remove property from Object. Topics on: . Read more: JS, JS Language, JS Operator, Object|FullStack Wiki by Roger J

Dictionary is defined as: Object with ASU arbitrary # properties with same type & unknown names (at Compile Time). Topics on: ASU. Read more: JS, TS, TS Syntax,

document is defined as: to return Document Object for window. Topics on: . Read more: JS, JS Concepts, Java Script Runtime, Platform API, Web API, DOM API, Wind

DOM Interface is defined as: Object Interface to expose portion of DOM API to Programming Language (ie JS). Topics on: DOM Interfaces are provided as API to J

epoch is defined as: integer # milliseconds since Jan 1 1970. Topics on: . Read more: JS, JS Language, Object, Date, Epoch|FullStack Wiki by Roger J

Error is defined as: Constructor Function for generic Error. Topics on: throw new Error(`My Error Message`). Read more: JS, JS Language, Object, Error, Construc

Error is defined as: Constructor Function for generic Error Object. Topics on: Error Properties. Read more: JS, JS Language, Exception, Error, Constructor Funct

Event is defined as: Interface Object to rep actions, autogen by DOM Node after Signal Trigger. Topics on: Events are not part of JS Library & is provided to Br

Factory Function is defined as: function to return Object (w/o this keyword & new). Topics on: . Read more: JS, JS Language, Object, Function, This Keyword, New

Fiber is defined as: internal React Object to rep each Node of DOM Tree. Topics on: Fiber acts as unit of work in Render Phase & Commit Phase, Fiber replaces Re

Flag is defined as: optional modifier for RegExp to config how Assertion behave on patterns. Topics on: g, i, m, d, s, u, y, Greedy, Lazy, Reluctant. Read more:

Fullfill is defined as: 🎉Successfully resulted in a value (as expected). Topics on: . Read more: JS, JS Language, Object, Promise, Promise Lifecycle, Settled,

function is defined as: callable Block of code to perform action or return Value. Topics on: Currier Function, function purpose, Anon Function, function definit

Function is defined as: Constructor Function for new function Object. Topics on: function, (function(){}).constructor === Function, Function Instance Methods, I

function definition is defined as: Binding for a function to define signature. Topics on: Binding, functions consist of function (keyword), parameters & functio

Function Instance Methods. Topics on: .apply(), .bind(), .call(), .toString(). Read more: JS, JS Language, Object, Function, Function Instance Methods| Dev Wiki

function output. Topics on: functions may optionally produce a value, functions may optionally result in a side effect, functions with no return statement or re

function purpose. Topics on: use function to wrap a piece of program in a value, use function to structure larger programs, use function to reduce repetition, u

g is defined as: Flag to search Global. Topics on: changes how .test() .exec() works. Read more: JS, JS Language, Object, Reg Exp, Reg Exp Syntax, Flag|Dev Wiki

Garbage-Collection is defined as: 🧹Algorithm (in JS Engine) to remove old unused Object from Heap Memory. Topics on: Memory Leak, Garbage-Collection is impleme

Global Object is defined as: Object to access via Global Scope. Topics on: . Read more: JS, JS Concepts, JS Engine, Call Stack, EC, Scope Chain, Scope, Global S

Greedy is defined as: (default) behavior for Quantifier to match as many chars possible. Topics on: . Read more: JS, JS Language, Object, Reg Exp, Reg Exp Synta

Group is defined as: RegExp JS Syntax using () to group together RegExp expressions. Topics on: \n, Capture Group, (?:abc), (a|b|c). Read more: JS, JS Language

Heap is defined as: unstructured memory pool to store all Object for app. Topics on: the Heap stores all reference types (objects), Heap is main shared memory o

history is defined as: to return History Object for window. Topics on: History. Read more: JS, JS Concepts, Java Script Runtime, Platform API, Web API, DOM API,

IIFE is defined as: Design Pattern to run self-executing Anon Function once & disappear. Topics on: IIFE is used to Encapsulation Variable to inner Block Scope,

IIFE syntax. Topics on: IIFE (anonymous) function expression, IIFE Arrow Function, IIFE with async arrow. Read more: JS, JS Language, Object, Function, IIFE

import.meta is defined as: return Object with Metadata for current Module. Topics on: import.meta.url. Read more: JS, Lib, Module, Import, Object, Metadata|Wiki

inherits() is defined as: util Static Method to set arg1 Object to inherit from arg2 object. Topics on: . Read more: JS, Nodejs, Node Stack, Node API, Util, Sta

initState is defined as: define init state Object to describe app. Topics on: . Read more: React, React Stack, Redux, Redux Concepts, Redux Reducer, Object|Wiki

Instance is defined as: Object created through a class or Constructor Function. Topics on: Methods are copied from class to all Instances. Read more: JS, JS Con

instance methods. Topics on: .add, .clear(), .delete, .has. Read more: JS, JS Language, Object, Set|FullStack Wiki by Roger J

Instantiation is defined as: (process) to create new Object Instance from class. Topics on: Instance. Read more: JS, JS Concepts, Multi Paradigm, Paradigm, OOP,

interface is defined as: Type to define Object shape & behavior blueprint. Topics on: use Interface to Type Object as either Record or Dictionary, Record, Dicti

Interface Object is defined as: Object to interact with API by expose Method & Property Key. Topics on: . Read more: Dev Tool, API, Interface Object, Object, Me

JSON is defined as: Global Object API to acccess Static Method to convert/parse JSON. Topics on: JSON Syntax, JSON API Static Method. Read more: JS, JS Language

JSON API Static Method. Topics on: JSON.stringify(), JSON.parse(). Read more: JS, JS Language, Object, JSON, JSON API Static Method|FullStack Wiki by Roger J

JSON Array Literal. Topics on: Each Array element rep JSON values, No holes in array allowed, No trailing comma allowed. Read more: JS, JS Language, Object, JSO

JSON Atomic Data types. Topics on: string (must be double-quoted), number (excluding NaN, +Infinity & -Infinity ), null (excluding undefined), boolean. Read mo

JSON Compound Data Type. Topics on: JSON Object Literal, JSON Array Literal. Read more: JS, JS Language, Object, JSON, JSON Syntax, JSON Compound Data Type|Wiki

JSON Object Literal. Topics on: Property Key must be '' double quoted string, Data Property must be a compatible JSON Compound or Atomic value, No trailing comm

JSON Syntax. Topics on: JSON Syntax frozen since ECMA-404, however, JSON Superset exist, JSON Compound Data Type, JSON Atomic Data types. Read more: JS, JS Lang

JSON.parse() is defined as: JSON API Static Method to parse string into JS value. Topics on: (method) JSON.parse(text: string, reviver?: Function): any, revive

JSON.stringify() is defined as: JSON API Static Method to convert data to JSON string. Topics on: (method) JSON.stringify(data, replacer?, space?): string, rep

location is defined as: to return Location Object for window. Topics on: Location. Read more: JS, JS Concepts, Java Script Runtime, Platform API, Web API, DOM A

map is defined as: iterable Object key:value pair struct with arbitrary key Type. Topics on: map is technically ordered ONLY in JS - since insertion order is pr

Map() is defined as: Constructor Function to Instantiation new map Object. Topics on: . Read more: JS, JS Language, Object, Map, Constructor Function, Instantia

Math is defined as: Global Object with built-in mathematical constants & functions. Topics on: Math Static Property, Math Static Method. Read more: JS, JS Langu

Math Static Method is defined as: . Topics on: Math.abs(x), Math.acos(x), Math.asin(x), Math.atan(x), Math.atan2(y,x), Math.ceil(x), Math.cos(x), Math.exp(x), M

Math Static Property. Topics on: Math.E, Math.LN2, Math.LN10, Math.LOG2E, Math.LOG10E, Math.PI, Math.SQRT1_2, Math.SQRT2. Read more: JS, JS Language, Object, Ma

Math.LN2 is defined as: (constant) Math Static Property for \ln{2}. Topics on: 0.6931471805599453. Read more: JS, JS Language, Object, Math, Math Static Proper

Math.random() is defined as: Math Static Method to return Pseudorandom number between 0 & 1. Topics on: . Read more: JS, JS Language, Object, Math, Math Static

Metacharacter is defined as: \ ^ $ . * + ? ( ) [ ] { } | special reserved RegExp character with special (non-literal) meaning to define search criteria/manipu

Method is defined as: function attach as Object property to define behaviour. Topics on: Abstract Method. Read more: JS, JS Language, Declaration, Literal, Obje

Methods to Create new map. Topics on: call Map() to create new empty map, call Map() with Array of [arrays with key-value pairs], call Map() & chain Set() to ad

n(?!abc) is defined as: Negative Lookahead to match n only if abc not exist ahead. Topics on: . Read more: JS, JS Language, Object, Reg Exp, Reg Exp Syntax, Reg

n(?=abc) is defined as: Positive Lookahead to match n only if abc exists ahead. Topics on: . Read more: JS, JS Language, Object, Reg Exp, Reg Exp Syntax, Regexp

Name is defined as: Uniq name for a uniode character, composed of (UPPERCASE-LETTERS hypens 0-9 spaces) [A-Z0-9-\s]. Topics on: 🙂: Name = SLIGHTLY SMILING FAC

Namespace Import is defined as: import Object under single name to contain all named exports as properties. Topics on: . Read more: JS, Lib, Module, ES Module,

navigator is defined as: to return Navigator Object for window. Topics on: Navigator, online. Read more: JS, JS Concepts, Java Script Runtime, Platform API, Web

Node Global Object is defined as: Top-Level Object access within Node.js w/o req CommonJS import. Topics on: __dirname, __filename, exports, global, os, process

Object is defined as: self-contained code with collection of properties, to model real-world/abstract features & relationships. Topics on: . Read more: JS, JS C

Object is defined as: any non-Primitive Variable Type rep a collection of properties. Pass by reference. Topics on: Array, Date, Error, Factory Function, Functi

Object. Topics on: Object Static Method. Read more: JS, JS Language, Object|FullStack Wiki by Roger J

Object Literal is defined as: JS Syntax to Declaration & initiate new Object. Topics on: !snippet new shallow copy using Object Literal & Spread Operator, Enhan

Object Literal Type is defined as: Type Annotation for Object Literal, use for inline anon Object pass as Argument. Topics on: Anonymous Interface, Anonymous Ty

Object Reference is defined as: Link to Object as Memory Address pointer to Heap location. Topics on: . Read more: JS, JS Language, Object, Object Reference, Me

Object Static Method. Topics on: Object.assign(), Object.freeze(), Object.isFrozen(), Object.keys(), Object.is(). Read more: JS, JS Language, Object, Object Sta

Object.assign() is defined as: Object Static Method to merge 2 objects into shallow copy. Topics on: shallow copy. Read more: JS, JS Language, Object, Object St

Object.create() is defined as: Static Method to manually link Object to another as __proto__. Topics on: does not use constructor function or assigne. Read more

Object.freeze() is defined as: Object Static Method to make Object immutable. Topics on: . Read more: JS, JS Language, Object, Object Static Method, Immutable

Object.is() is defined as: Object Static Method to check if equality of two values, with even greater strictness than ===. Topics on: Object.is() when both (eva

Object.keys(). Topics on: . Read more: JS, JS Language, Object, Object Static Method|FullStack Wiki by Roger J

OOP is defined as: Paradigm to organize & structure data as Object. Topics on: Object, Abstraction, Encapsulation, Inheritance, Polymorphism, Prototypal Inherit

Pattern Character is defined as: any characters (except for Metacharacter) that match themselves. Topics on: .. Read more: JS, JS Language, Object, Reg Exp, Reg

PCNE is defined as: Parse Construct Normalize Encode. Topics on: . Read more: JS, JS Language, Object, URL, PCNE|FullStack Wiki by Roger J

Pending is defined as: async task still run in background. Topics on: . Read more: JS, JS Language, Object, Promise, Promise Lifecycle, Pending, Async| Dev Wiki

Primitive is defined as: non-Object base data-type UNNBBSS. Topics on: immutable, Autoboxing, number, bigint, boolean, string, symbol, null, undefined. Read mor

Promise is defined as: Object placeholder for async operation & eventual Settled result. Topics on: container for async delivered value, container for a future

Promise Lifecycle is defined as: (model) Promise process to start as Pending & end Settled into Fullfill || Reject. Topics on: Pending, Settled, Settled Promise

Promise.all(). Topics on: . Read more: JS, JS Language, Object, Promise|FullStack Wiki by Roger J

Promise.race() is defined as: to set Race Condition to return first Promise to Settled. Topics on: Race Condition. Read more: JS, JS Language, Object, Promise,

props is defined as: frozen Object of properties; passed as dynamic input from Parent Component to children. Topics on: props are immutable within Component via

Prototypal Inheritance is defined as: Link for all Object to their Prototype, to mimic Inheritance access to Method & props. Topics on: JS does not have real 'C

Prototype is defined as: Model blueprint Object to Prototypal Inheritance methods & properties, link via __proto__, to mimic 'classical' OOP Inheritance. Topics

Prototype Chain is defined as: Series of links to connect Object to Prototype; to mimic Inheritance. Topics on: when call method/property not exist directly on

Quantifier is defined as: RegExp Syntax to express # repetitions to match. Topics on: ?, *, +, {n}, {n,}, {n,m}, .*, .*abc.*, ^n, ?=n, ?!n. Read more: JS, JS La

Race Condition. Topics on: . Read more: JS, JS Language, Object, Promise, Promiserace, Race Condition|FullStack Wiki by Roger J

readonly is defined as: Property Modifier JS Keyword to set Object property as read-only. Topics on: !snippet interface with readonly prop. Read more: JS, TS, T

Record is defined as: Object with fixed number of known named properties & any Type before Compile Time. Topics on: !snippet Object-as-Record. Read more: JS, TS

Reference Reassignment is defined as: New Identifier created 👉 same value to ref Heap Memory Address (where actual Object store in Heap). Topics on: Referentia

Referential Equality is defined as: Objects equivalent based on Memory Address location NOT Value. Topics on: React uses Object.is() method to Diffing equality

RegExp is defined as: regex Global Object to make regex in JS. Topics on: RegExp(), RegExp Syntax, Regexp Snippets, RegExp() Instance Method. Read more: JS, JS

regexp atom is defined as: basic building block of RegExp. Topics on: Pattern Character, Character Escape, Metacharacter. Read more: JS, JS Language, Object, Re

regexp body is defined as: of RegExp expression (abc) inside /abc/. Topics on: Character Class, Group, Quantifier, Assertion. Read more: JS, JS Language, Object

RegExp Literal Notation is defined as: Literal JS Syntax to create RegExp, execute at Compile Time. Topics on: . Read more: JS, JS Language, Object, Reg Exp, Re

Regexp Snippets. Topics on: Guard Clause to test if string is only whitespace else return, Mutate String.prototype to add own chain function to decode hex escap

RegExp Syntax is defined as: JS-specific regex syntax. Topics on: regexp body, regexp atom, Flag, RegExp Literal Notation, RegExp Constructor Notation. Read mor

RegExp() is defined as: Constructor Function for new RegExp Object. Topics on: . Read more: JS, JS Language, Object, Reg Exp, Constructor Function |web-Dev Wiki

RegExp() Instance Method. Topics on: .test(), .exec(), .match(). Read more: JS, JS Language, Object, Reg Exp|FullStack Wiki by Roger J

Reject is defined as: 💩Error during async task. Topics on: . Read more: JS, JS Language, Object, Promise, Promise Lifecycle, Settled, Reject | Full-Stack Wiki

Req is defined as: Request Object, 1st Argument to pass Routing Handler. Topics on: Req starts as instance of http.IncomingMessage, req.params, req.query, req.b

Res is defined as: Response Object, 2nd Argument to HANDLER. Topics on: res.status(code), res.set(name, value), res.cookie(name, value), res.clearCookie(name),

set is defined as: unordered Object collection of unique values. Topics on: Set(), sets are iterable. Read more: JS, JS Language, Object, Set | Full-Stack Wiki

Set instance property. Topics on: .size. Read more: JS, JS Language, Object, Set|FullStack Wiki by Roger J

Set() is defined as: Constructor Function to convert iterable Argument to set. Topics on: Set instance property, instance methods. Read more: JS, JS Language, O

sets are iterable. Topics on: sets can be converted to Array using Spread Operator. Read more: JS, JS Language, Object, Set|FullStack Wiki by Roger J

Settled is defined as: async task complete. Topics on: Fullfill, Reject, Promise will eventually Settled into either Fullfill or Reject. Read more: JS, JS Langu

Settled Promises can be consumed. Topics on: Consume. Read more: JS, JS Language, Object, Promise, Promise Lifecycle|FullStack Wiki by Roger J

shallow copy is defined as: one level deep in a cloned Array/Object. Topics on: . Read more: JS, JS Language, Object, Object Static Method, Objectassign, Shallo

Square Bracket Notation is defined as: JS Syntax to access element from Object via (string) key. Topics on: . Read more: JS, JS Language, Chain, JS Syntax, Obje

Story is defined as: export default Object to Declarative render FC snapshot with specific key state to dev/test/doc. Topics on: title & component req fields -

symbol is defined as: immutable constant Primitive Value to rep unique Object property keys. Topics on: to create a new symbol must call the new Symbol() Constr

Unicode Character Property is defined as: Metadata property describing a unicode character, used to defined nature of character. Topics on: Name. Read more: JS,

Unicode/other escape is defined as: other sort. Topics on: \​0, \​xxx, \​xdd, \​uxxxx. Read more: JS, JS Language, Object, Reg Exp, Reg Exp Syntax, Regexp A

URL is defined as: Object Interface to PCNE URLs. Topics on: URL(), PCNE. Read more: JS, JS Language, Object, URL, Interface, PCNE|FullStack Wiki by Roger J

URL() is defined as: Constructor Function to return new URL. Topics on: . Read more: JS, JS Language, Object, URL, Constructor Function, New | Full-Stack Wiki

WebSocket is defined as: Interface Object & Constructor Function to access WebSockets API. Topics on: Websocket Event. Read more: JS, Nodejs, Node Stack, Web So

Wrapper is defined as: Object to wrap & Encapsulation data. Topics on: String, Number, BigInt, Boolean, Symbol, All Primitive except for null & undefined have a

Zero-Index is defined as: number system to assign index sequence from 0. Topics on: can not use strings as index, like associative arrays. Read more: JS, JS Lan