In this article, you will learn about the importance and role of JavaScript language in the software industry. We will learn where the language is used and how it helps software companies in production.
JavaScript is a web development language used to add functionality to websites.
website. It makes websites interactive, powerful, faster and more beautiful. It is a scripting technology is an interpreted language that can be compiled directly in a web browser, similar to C or CPP No compiler is required to compile.Basically, to develop a website, we need three basic languages: HTML, CSS and JavaScript.
HTML is used to add content to a website, such as images, text, buttons, etc.
CSS plays an important role in the styling part, which means applying styles to all the content on the website.
JavaScript is used to make websites interactive, such as making elements responsive, such that the color of the website changes when you press a button. HTML and CSS provide structure to the website but do not perform any actions on the website, while JavaScript performs dynamic activities on the website.
HTML − Content, structure
CSS − Design and aesthetics
JavaScript − Behavior
As a programming language, JavaScript can work like C and Python, and can also perform all operations that simple programming languages can perform.
Variable declaration
Server−side programming
Use external modules
Class declaration and its usage
Create different types of functions and operators
<!DOCTYPE html>
<html>
<head>
<title>Example</title>
</head>
<body>
<script>
let MyName = "Kalyan";
function value(){
return "Hey there";
}
document.write("My name is: ", MyName)
document.write("<br>Value function says: ", value())
</script>
</body>
</html>
Here MyName is a variable, and value is a function called in the console object.
In the last few years, new JavaScript frameworks such as ReactJs, Angular, and Vue have entered the scene, making the aesthetics of websites smoother, more structured, and more interactive for users.
Like Python, PHP, and Ruby, JavaScript can also use Node.Js as a server-side language. As a result, developers have been increasing their knowledge of this technology. JavaScript is used in almost all software companies and its popularity continues to grow.
In the software industry, you will perform the following tasks:
Develop functions based on assigned tasks.
Develop and improve existing software.
Work on a development team.
Develop JavaScript documentation. Develop JavaScript documentation.
Debugging the application to track and resolve the bug.
Recommend ongoing or existing software.
Although JavaScript has some disadvantages, it also has its advantages.
Using JavaScript has the following advantages in software companies:
JavaScript is slower relative to some compiled languages due to interpreter checks (the interpreter does checks at runtime).
Because JavaScript runs on the client, data validation can be done in the browser without sending it to the server for validation. Therefore, in the event of an error, the browser only updates selected parts of the page without reloading the entire website. JavaScript also improves website performance by reducing code length. The code has various built-in functions, loops, DOM access, etc., reducing overhead.
Thanks to frameworks like React, Vue, and Angular, creating eye-catching web pages has become very easy. Many functions, such as sliders, drag and drop, provide a rich interface for the website. This results in more user interaction and provides greater responsiveness.
Allowing third-party extensions allows developers to use predefined code in their programs to save time and money and make JavaScript applications run faster.
There are some disadvantages of using JavaScript in software companies:
As you know, JavaScript code is visible to the user, so the user can simply take out the source code of the application and use it for the wrong purpose. Users with advanced knowledge can also perform vulnerable checks and gain access to critical information.
It becomes difficult to figure out the error as browsers do not display the errors generated by JavaScript. This makes debugging difficult, as we have HTML editors who allow for debugging, but they are not effective compared to other language editors as of the large code size it won't be easy to debug on the HTML editors.
Since JavaScript is implemented in browsers and they are constantly changing, this makes it harder to adapt.
Whenever an error occurs, it stops the rendering of the entire website, so due to a small error, the entire JavaScript stops working.
So, web development is progressing rapidly and JavaScript is growing as developers use it more and more.
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