It is used to create an interactive website. It is mostly used to perform some of these types of tasks:
Form Validation: While taking input on any form by the user, to verify whether the entered data is in the correct format or not like email, mobile no. Etcetera.
Drop Down Menu: Dynamic drop down menu can be created for the website.
Animation: It is also used to animate website elements and add different animation effects.
Browser Detection: You can find out which browser the user is using.
Cookies: Some information can be stored in the user’s browser and can be accessed when the user visits again. This information is called cookies.
Code Editor: You can use a normal text editor like notepad to write code or you can use any of the code editors like Notepad++, Dreamweaver, Sublime, Brackets etc.
Browser: You can use any modern web browser like Chrome, Firefox, Safari etc.
Fast Execution: It is fast because it runs on the client side and does not require much server interaction.
Cross Platform: It can work easily in any operating system and any modern browser like Chrome, Firefox, Internet Explorer etc.
Easy to Learn: This language is very simple and it is very easy to learn. Its code syntax is very simple and it is like Java and C language.
Popularity: According to the Popularity of Programming Language Index (PYPL), it is at third place after Python and Java in the list of popular programming languages in November 2020. After the arrival of Node.js, its use as backend programming is continuously increasing.