What is JavaScript?

JavaScript is akin to the brain of web pages.

JavaScript is a programming language that adds dynamic functionalities to websites.

What does dynamic functionalities mean here?

Examples of dynamic functionalities are as follows.

1. Event Handling: Events refer to the actions a user takes on a website. Using JavaScript, you can make a website respond to events such as button clicks, mouse hovers, and keyboard inputs. For instance, you can create an action that changes the color of a button when it is clicked.

2. Form Validation: When logging in, you enter a username and password, right? JavaScript can check if the entered data in the form fields is a valid email or if the password is at least 6 characters long.

3. Animations and Effects: With the help of CSS, you can add animations to your webpage. For example, a specific HTML element can gradually appear or delay its appearance based on a set timer.

4. Fetching and Sending Data: You can fetch desired data from a server providing dynamic web content to display on your webpage, or send necessary data to a server.

5. Creating Interactive Elements: You can create interactive elements like sliders that can be swiped, or dropdowns that display sub-elements below.

6. Manipulating the Webpage: You can hide or show specific parts of a webpage or add content based on certain events.

JavaScript, along with HTML and CSS, is an essential component in building a webpage.

JavaScript is not only used for the webpages displayed in browsers but also extensively in web servers, mobile apps, desktop apps, and other application software areas.

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