JavaScript is getting day by day popular as teams leverages support on hybrid apps, back-end, embedded devices, stack-front-end. Wanted to know how JavaScript works? Then read this full blog and get your answers. You can also hire JavaScript assignment help at affordable prices. To stay competitive all time, you must be aware of the overview of programming language.

Overview of JavaScript

Today every developer must have heard about V8 Engine and many of them understand that this programming language is single-threaded which is using callback queue.

In this blog, you will get to know How JavaScript Programming language works in detail. Once you get an understanding of these crucial concepts, then you can write easily. However, if you have just started learning this language, then you will get to know that what makes JavaScript language differs and complexed from other languages. Lastly, if you have a clear idea of this language, then you will get to know fresh insights of this language which you may not have gone through.

The JavaScript Engine

The best example of the JavaScript Engines is Google’s V8 engine. Node and Chrome are used under V8 engines. A simplified view can be seen like this:

JavaScript Engine has Two Essential Components

Call Stack: Codes execute in this stack frames

Memory Heap: Allocation of memory happens in Memory Heap

The Runtime: JavaScript used Application Programming Interface in the browser. For instance, “setTimeout”. However, those APIs are not provided in the Engine:

  • Where you come from?
  • It looks like reality is complexed

Though we have an engine, yet there is a lot more in this programming language. Web Application Programming Interface provided by several browsers like AJAX, DOM, setTimeout, and so forth.

After that, we also have a popular callback queue and event loop.

Call Stack: As you know that JavaScript Programming language is a single threaded. This tells that it has only one stack. Only one thing will be performed at a time.

Call Stack tells in a program which records where you are in a program. Once you step into the function, then all you put on the top of the stack. And in any case, you return from the function, we pop out from the stack. That’s what a stack does. Right?

Let’s go through one of the examples. Look at this code:

When engine executes these lines of code, then your call stack gets empty. After that, the steps would be like this:

When engine executes these lines of code, then your call stack gets empty. After that, the steps would be like this:

When you add the entry into your call stack, it is termed as Stack Frame.

When Exception is thrown, this tells how to add stack traces.

At the time of the exception, this is how you use coding:

The resultant execution code will be looked like this:

These are some of the steps, you must be known while you are doing codes in this language. For more information, you can hire Java assignment help without any hassle.

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