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Javascript Closures

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A closure is a function in JavaScript that refers to variables in the outer scope from its inner scope. The outer scope is kept inside the inner scope by the closure. To comprehend the closures, you must first comprehend how lexical scoping works.

Closure, also known as lexical closure or function closure in programming languages, is a method of implementing lexically scoped name binding in a language having first-class functions. A closure is an operational record that stores a function and its surroundings.

A JavaScript closure is what it's called. It enables the use of "private" variables in a function. The anonymous function's scope protects the counter, which can only be modified via the add function. A closure is a function that has access to the parent function's scope even after it has closed.

Closures are the key mechanism for ensuring data privacy in JavaScript. The contained variables are only in scope within the containing (outer) function when you utilize closures for data privacy. Only the object's privileged methods provide access to the data from outside scope.

Closures in javascript have the virtue of allowing you to bind a variable to an execution context. var closedIn = ; var f = function() closedIn. blah = 'blah'; / closedIn was just "closed in" because it was defined outside of the function.

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Javascript Closures

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Learner's Ratings

Reviews

Dhanu Sree S S

Eruvaramtheja

Bakare Oluwatobi

Raktim Ghosh

Sachin

Pasalapudi Pujita Sri Naga Santhoshi

Mohammad Suhail

Prabhat Yadav

karthikeyan Karthik

William Jimmy

Course Content

Introduction to Javascript

How to use LearnVern

Javascript Features

Ways to write and Add Javascript code

Comments in Javascript

Assignment : Introduction to JavaScript

JavaScript Variables

JavaScript Global Variable

Primitive Data Types in JavaScript

JavaScript - Non Primitive Datatypes

JavaScript arithmetic operators

JavaScript Comparison Operators

JavaScript Bitwise

Javascript Logical Operator

Javascript Assignment Operator

Special JavaScript Operators

JavaScript if/else Statement

JavaScript switch Statement

JavaScript do/while Statement

JavaScript for/in Statement

JavaScript Functions

JavaScript Function call()

JavaScript bind () vs apply () and call ()

Assignment : JavaScript Basics 1

Assignment : JavaScript Basics 2

Javascript Objects

JavaScript object methods part -1

JavaScript object methods part -2

JavaScript Arrays

JavaScript Arrays methods part 1

JavaScript Arrays methods part 2

JavaScript Arrays methods part 3

JavaScript Arrays method part 4

JavaScript Arrays methods part 5

JavaScript Arrays methods part 6

JavaScript string

JavaScript string methods part 1

JavaScript string methods part 2

JavaScript Date objects part 1

Java script Date objects part 2

JavaScript math object part 1

JavaScript math object part 2

JavaScript Numbers and Number Constants

JavaScript Number Methods

Assignment : JavaScript objects

Java script window- The Browser Object Model

Java script BOM- Window Object

Javascript BOM - History Object

Javascript BOM - Navigator object

Javascript BOM - Screen Object

Assignment : Browser Object Model

Javascript Document Object Model - DOM

Javascript Document Object Methods

Assignment : Document Object Model

Javascript Form Validations

Javascript Email Validations

Assignment : Javascript Validation

Java Script Classes

Java Script Prototypes

Java Script Constructors