What are the topics in JavaScript?

What are the advanced topics in JavaScript?

Learn Modern JavaScript: Advanced Topics

  • Advanced concepts for objects and functions.
  • Determining the value of ‘this’
  • this binding.
  • In-depth prototype concepts.
  • Indirectly invoking functions.
  • Closure.
  • Immediately Invoked Function Expressions (IIFEs)
  • Namespace pattern.

What are the important topics in JavaScript for interview?

10 Important JavaScript Concepts for Interview

  • Truthy and Falsy values. By default, javascript considers some values as true and the others false. …
  • Null vs Undefined. …
  • Double Equal ( == ) vs Triple equal ( === ) …
  • Scope. …
  • Block scope. …
  • Closuer. …
  • Bind. …
  • Call.

What is most used in JavaScript?

React is by far the most popular JavaScript framework used today. This bare-bones framework uses functional programming principles to make parallel programming and coding comprehension much easier.

What are the hardest concepts in JavaScript?

Asynchronous JavaScript (promises, callbacks, async/await) Closures. The event loop. Recursion.

What is the basic knowledge of JavaScript?

JavaScript is a programming language that adds interactivity to your website. This happens in games, in the behavior of responses when buttons are pressed or with data entry on forms; with dynamic styling; with animation, etc.

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What would be the result of 3 2 7 in JavaScript?

What would be the result of 3+2+”7″? Since 3 and 2 are integers, they will be added numerically. And since 7 is a string, its concatenation will be done. So the result would be 57.

What are promises in JavaScript?

A promise is an object that may produce a single value some time in the future : either a resolved value, or a reason that it’s not resolved (e.g., a network error occurred). A promise may be in one of 3 possible states: fulfilled, rejected, or pending.

What is array in JavaScript?

In JavaScript, an array is an ordered list of values. Each value is called an element specified by an index. … First, an array can hold values of different types. For example, you can have an array that stores the number and string, and boolean values. Second, the length of an array is dynamically sized and auto-growing.

How many frameworks are in JavaScript?

In case you’re wondering how many JavaScript frameworks are there, according to Wikipedia (which isn’t the most trusty source, but hey), there are at least 24 JS frameworks and around 83 libraries.

What is latest in JavaScript?

ES2015 is the latest version of JavaScript programming language. It is the first major upgrade to JavaScript since 1997. … Kickstart your web development journey by learning JS concepts with our JavaScript Course.

Which frameworks use JavaScript?

The 5 Most Popular JavaScript Frameworks

  1. Node. js. Node. …
  2. Vue. js. Vue. …
  3. AngularJS. AngularJS is maintained by Google and addresses common complications in building single-page applications (SPAs). …
  4. Ember. js. …
  5. React. React is a JavaScript framework developed by Facebook that simplifies the process of building interactive UIs.
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How do I prepare for JavaScript interview?

How to prepare for JavaScript interviews

  1. Step 1: Know what you need to study. You already know what programming language you will be using, so now you need to research what aspects of that language will be tested. …
  2. Step 2: Make a plan. …
  3. Step 3: Don’t forget the behavioral interview.

Where do we use JavaScript?

What is JavaScript used for?

  • Adding interactive behavior to web pages. JavaScript allows users to interact with web pages. …
  • Creating web and mobile apps. Developers can use various JavaScript frameworks for developing and building web and mobile apps. …
  • Building web servers and developing server applications. …
  • Game development.

How do you Practise JavaScript?

More videos on YouTube

  1. Build Javascript Projects. …
  2. Improve Existing Projects. …
  3. Complete Code Challenges. …
  4. Join an Open Source Project. …
  5. Join the Coding Community. …
  6. Share your Javascript Learning Journey with Others. …
  7. Write Coding Articles and Share Knowledge.