Is there a compiler for JavaScript?

Compilers are extremely vital for any source code to be executed and properly run. In fact, without source code’s execution, no program or application on your device would work. 

We all should basically know every application on our devices are just a group of source codes working together, and they’re run only when it is compiled.

Now that the compiler is an important aspect, we all should also know that not for every programming language will a compiler be available. Yes, for instance, JavaScript is a computer language that doesn’t have its own compiler but it is also one of the famous languages used to create software.

If there isn’t a compiler, how can one transform a source code? Pretty simple! 

Thanks to the advancements in the computer field, we now have JavaScript online compilers that quickly shift a user’s manual code into machine code, making the whole program run smoothly. 

Let us now look at this guide on JavaScript Compiler, why there isn’t a compiler for it, how the online JavaScript works and why it is beneficial.

What is a JavaScript

Java and JavaScript are not the same—let’s get that straight first. You might wonder why the names are similar; it is because some JavaScript’s features are the same as the features of Java. Another fact is, JavaScript’s syntax was created with references made to C++ and Java. That is why JavaScript codes are easy to write.

As JavaScript is a client-side language, it helps web creators to embed code on their webpages, so that their websites become interactive and perform easy tasks for the users. Any browser that we use these days pretty much runs on JavaScript.

Moreover, JavaScript’s use has been significantly increased in the modern days because most of the web applications are occupied by JavaScript which runs on both client and server side logic. While JavaScript might be a complex language, most of the developers ensure to use only its subsets for relevance. 

As JavaScript codes can get clumsy, many recommendations will be made by the class so that a good JavaScript code can be written.

One of the biggest differences between JavaScript and other programming languages is its “compiler” process. 

Technically there isn’t a compiler and it usually runs using Just-InTime compilation. Let us clearly look into it now.

Why does JavaScript have no compiler?

Due to JavaScript being a language that is interpreted and not actually compiled, it doesn't have a compiler. Note that, in Java, there is a Java Virtual Machine, which helps in converting source code into byte codes, which further makes it usable on every platform. 

Similarly, in JavaScript, it makes use of Just-In-Time compilation, which converts the source code into bytecode. 

Moreover, the platform in which the JavaScript needs to be executed will have an interpreter, and it will read the code accurately and execute it. A platform without an interpreter won’t run JavaScript code.

JavaScript Online Compiler

Most of the online compilers execute the same process, say, a python compiler online. It basically looks into the source code, check’s the logic and then executes it. Speaking of an online JavaScript compiler, it first disassembles the source code, manipulates it and then executes the output.

In the online compiler, the code gets interpreted and parsed. During this phase, all the data of the code gets safely stored. When the code is being run on a browser, the DOM manipulation and actions bindings also get taken care of for an error free output.

JavaScript online compilers are super efficient, as there isn’t any particular software that is needed to be bought and installed. There are technically plenty of online compilers scattered around to easily access from anywhere and make use of it. Moreover, the online compilers accurately scan the code and give out the perfect result.

The users needn’t have to worry about debugging or other relevant manual processes as the online JavaScript compiler does it quickly and easily.

How does JavaScript Online Compiler work?

These special online tools first convert source code into bytecodes. Usually, every source code is of a high-level language, and so the online compiler carefully reads, examines and then translates the code into the required format which is needed for the code to get supported on a particular platform. 

JavaScript compilers are easy to use because all a user should do is manually enter the code in the editor, then press the “Run” button which will instantly find the output and display it.

Previously it was mentioned how JavaScript codes are very easy to write. This is because it has the most simple syntax terms to follow. Here is an example with one JavaScript syntax to show how easily an output can be rendered:

Input would be console.log(“Hello There!”)

Once this input is provided, it gets converted and the output would be: Hello There!

Simple, isn’t it?

JavaScript Online Compiler Benefits

We already know that online compilers give accurate results and can be accessed from anywhere. Additionally, there are some other benefits we all ought to know.

• Execution: Due to the useful or strong server, it becomes simple to run complicated codes. Such complicated codes usually take a lot of time to get executed but thanks to the online compiler, the running time gets shortened and the execution process becomes quick.
  
  

• Set-up: Thanks to the online compilers, we needn’t have to install any particular app to use it as it can be run using the internet and various platforms that offer it.
  
  

• Easy: There will be various beneficial options in an online compiler which will help the users to produce the output of the code without too much hassle. The simple interface in the online compilers, will run the code smoothly.
  
  

• CPU won’t be affected: When we  manually compile a code in our system, the CPU will become overheated. But via an online compiler, the CPU gets protected.

Conclusion

With more than five programming languages being constantly used by developers, JavaScript is considered to be remarkable. Being founded in the year 1995, the coding language quickly gained its population due to its efficiency. 

Now with various JavaScript online compilers popping up, many coders are quickly wrapping up their code and developing wonderful websites. If you’re intending to run a JavaScript code for a website or so, we believe you will ace it.