How to use JS files

What is the Js file format?

Js stands for the Javascript file format. JavaScript is a lightweight, cross-platform, single-threaded, and interpreted compiled programming language. It is also known as the scripting language for web pages. It is well-known for the development of web pages, and many non-browser environments also use it....

Example of Javascript code

Javascript // JavaScript code to greet the user // Prompt the user for their name var userName = prompt("What is your name?"); // Check if the user entered a name if (userName !== null && userName !== "") { // Display a personalized greeting alert("Hello, " + userName + "! Welcome to the world of JavaScript."); } else { // Handle the case where the user didn't enter a name alert("Hello, anonymous! Welcome to the world of JavaScript."); }...

Features of the Javascript

Text-Based Language: JavaScript is written in plain text using an IDE or text editor.Interpreted Nature: Code is executed line by line by an interpreter, without separate compilation.Client-Side Usage: Enhances web page interactivity, executed by browsers’ built-in engines.Dynamic UI Creation: Manipulates the DOM to dynamically update web page content and structure.Event-Driven Programming: Allows developers to respond to user actions and system events for interactive web applications....

Applications of the Javascript

Web ApplicationsAndroid DevelopmentServer ApplicationsWeb Games...

How to use JS files

You must include a JS file in the HTML document in order to use it. To include the file, use the link tag as indicated below....

JavaScript Syntax

JavaScript files can contain variables, operators, functions, conditions, loops, arrays, objects, etc. Given below is a brief overview of the syntax of JavaScript....

Advantages of JS

It always gets executed on the client environment to save lots of bandwidth and make the execution process fast.The biggest advantage of JavaScript having the ability to support all modern browsers and produce an equivalent result.JavaScript plays nicely with other languages and may be utilized in an enormous sort of application....

Disadvantages of JS

The main problem or disadvantage in JavaScript is that the code is always visible to everyone anyone can view JavaScript code.JavaScript is usually interpreted differently by different browsers. This makes it somewhat complex to read and write cross-browser codeIf the error occurs in JavaScript, it can stop rendering the whole website. Browsers are extremely tolerant of JavaScript errors....

Conclusion

In summary, a JavaScript file (.js) contains code written in the JavaScript programming language. It is a versatile language that plays a crucial role in web development, both on the client and server sides. JavaScript files are executed by JavaScript engines, and the code within them is responsible for creating dynamic and interactive web experiences....