What exactly is a "closure" in JavaScript?

Asked by Last Modified  

Follow 2
Answer

Please enter your answer

Cyber Security Expert & Advisor | Police & Defence Trainer | Digital Forensics.

A closure in JavaScript is created when a function is defined within another function, allowing the inner function to access the variables of the outer function even after the outer function has finished executing. It forms a lexical scope that retains access to its outer scope's variables. Closures...
read more
A closure in JavaScript is created when a function is defined within another function, allowing the inner function to access the variables of the outer function even after the outer function has finished executing. It forms a lexical scope that retains access to its outer scope's variables. Closures are powerful for encapsulation, data privacy, and creating modular code. read less
Comments

Wroking in IT industry from last 15 years and and trained more than 5000+ Students. Conact ME

Function with preserved lexical scope; retains access to outer variables.
read more
Function with preserved lexical scope; retains access to outer variables. read less
Comments

I am online Quran teacher 7 years

Function with preserved lexical scope; retains access to outer variables.
Comments

View 1 more Answers

Related Questions

Hi, We provide online instructor-led training. I am looking for Java Teacher/Instructor who can teach java via online. If anyone interested then contact me. I have to start the class from tomorrow onwards.
Hi, If you haven't finalised yet, I am interested in being an instructor. I will be teaching the newest version of Java, Java 10. Experience - 3 yrs as Software Engineer, BTech CSE, teaching Java to school and college students since 3 yrs.
Profile Photo
Ujjwal Rana
Some basic program bass of java and how it work?
JavaScript (Lightweight & loosely typed client-side Scripting Language which needs interpreter) is entirely different from Java (Programming Language which needs compilation)
Profile Photo
Shekhar
How Java is different from Java script?
Java is server side language is used to make application. Java is need to compile. The end user can not see the code of java it is secured. But Javascript is script language is a open source can be viewed by end user in browser.
Profile Photo
Samadhan
Which skills do i require to be an better ui developer?
Mainly HTML, CSS, JavaScript and Advance need Javascript Framework like AngularJS, Angular, Ember JS, React JS and so and so.
Profile Photo
Soumya Ranjan

Now ask question in any of the 1000+ Categories, and get Answers from Tutors and Trainers on UrbanPro.com

Ask a Question

Related Lessons

Dependency Injection in Angular 2
Dependency injection Dependency injection is a way to supply a new instance of a class with the fully-formed dependencies it requires. Most dependencies are services. Angular uses dependency injection...
Profile Photo

What is hoisting in Javascript?
As a matter of fact it is, javascript is an interpreted language and the javascript interpreter performs a lot of mystical stuff behind the scenes. Hoisting in JavaScript is certainly one of them. A quick...
Profile Photo

Inversion of Control
Problem You have classes that have dependencies on services or components whose concrete type is specified at design time. In this example, ClassA has dependencies on ServiceA and ServiceB. Figure 1 illustrates...
Profile Photo

Mark And Sweep Algorithm in Javascript Memory Management
This algorithm reduces the definition of "an object is not needed anymore" to "an object is unreachable". This algorithm assumes the knowledge of a set of objects called roots (In JavaScript, the root...
Profile Photo

Beginner JavaScript
1. Javascript is a programming language that adds interactivity to your website. 2. JavaScript is a programming language that allows you to implement complex things on web pages. 3. Javascript...
Profile Photo

Recommended Articles

Here are the top 6 must have skills for every Web Designer : Technical Skills Web designers undoubtedly require very strong technical skills. They must have hands on using Web designing software and tools, such as Adobe Dreamweaver, Fireworks, Photoshop, Flash etc. In addition to the knowledge of design...

Read full article >

Information technology consultancy or Information technology consulting is a specialized field in which one can set their focus on providing advisory services to business firms on finding ways to use innovations in information technology to further their business and meet the objectives of the business. Not only does...

Read full article >

Business Process outsourcing (BPO) services can be considered as a kind of outsourcing which involves subletting of specific functions associated with any business to a third party service provider. BPO is usually administered as a cost-saving procedure for functions which an organization needs but does not rely upon to...

Read full article >

Hadoop is a framework which has been developed for organizing and analysing big chunks of data for a business. Suppose you have a file larger than your system’s storage capacity and you can’t store it. Hadoop helps in storing bigger files than what could be stored on one particular server. You can therefore store very,...

Read full article >

Looking for Java Script Training classes?

Learn from the Best Tutors on UrbanPro

Are you a Tutor or Training Institute?

Join UrbanPro Today to find students near you