Important Questions Related to JavaScript

To excel in web designing, the best way to start is JavaScript. Right here in this article, we will be exploring some of the important questions that most often a JS programmer comes across.
So, let's get into the first question.

What is JavaScript?

One of the most common questions is what JavaScript is.
So here's the answer - At the global level, JS is one of the well-known scripting languages.

In the current scenario, it is widely used by the expert web designers and developers and this is one of the reasons of its rapid growth. Apart from this, there are major big companies who are building their applications entirely in JavaScript. Some of those companies are Walmart, PayPal and Netflix.

If we look at the average salary of a JavaScript pro in the United States is $70,000 annually.
So, it's a great opportunity to get a good job out of learning JS.

Career Options:

You can work as a:

• Front-end Developer
• Back-end Developer
• Full stack web developer

 

What can you do with it?

So, now the second question is this that what can you do with this programming language.
For a long time, JS was only used in browsers to build interactive web pages some developers refer to as a toy language but those days are gone because of huge community support and investments by large companies like Facebook and Google.
Now, during these days, we are able to go for the development of not only websites but we moved lots of step forward and now we can work with the mobile apps too. Not only this, we are also able to develop chats, video streaming, as well as games.

 

JavaScript code - Where does it run?

Now, come on the third question, where does this programming language's code run.
JavaScript was originally designed to run only in browsers so every browser has what we call a JS engine that can execute JavaScript code for example the JS engines in Firefox and Chrome are SpiderMonkey and v8 in 2009 a very clever engineer called Ryan Dahl took the open-source JS engine in chrome and embedded it inside a C++ program he called that program node that is built in C++ and works with Google's v8 JS engine.

Now with this we can run the language code out of a browser so we can pass our JS code to node for execution and this means with this programming language, we can build the backend for our web and mobile applications. So, in a nutshell JavaScript code can be run inside of the browser or in node browser and node provides a runtime environment for our JS code.

Get to know about JavaScript vs. ECMAScript

Now, finally come down to the last question - differences between the two scripts.
Well, ECMAScript is not a programming language, it is actually a specification.

On the other hand, we all know that JS is not a specification, it is actually a programming language.
And this is used for confirming the specification.

 

Now, where this ECMAScript come from?

It is was created by an organization called ECMA.
This organization handles the development of the standard versions of ECMAScripts.
Let's look at some history too.
So, the very first version was came into action in the year of 1997.
The next major release came in the year of 2015 and from this year, the organization started releasing the annual versions.
If we talk about the release of 2015 ten it was the launched year of ES2015. The short name was also discovered. It was ES6 and in complete way it is ECMAScript verion.
This specification defined many features for JS.


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