Nice Answer SARAH ALFRED.

Thank you for your output. 

JavaScript Advantages

The biggest advantages to a JavaScript having a ability to produce the same result on all modern browsers.

Client-Side execution: No matter where you host JavaScript, Execute always on client environment to save a bandwidth and make execution process fast. 

User Interface Interactivity: JavaScript used to fill web page data dynamically such as drop-down list for a Country and State. Base on selected Country, State drop down list dynamically filled. Another one is Form validation, missing/incorrect fields you can alert to a users using alert box. 

Rapid Development: JavaScript syntax's are easy and flexible for the developers. JavaScript small bit of code you can test easily on Console Panel (inside Developer Tools) at a time browser interpret return output result. In-short easy language to get pick up in development. 

Browser Compatible: The biggest advantages to a JavaScript having a ability to support all modern browser and produce the same result.

Advantages of JavaScript

• JavaScript Works on the Client-Side
•  JavaScript is Platform Independent
• JavaScript is Easy to Learn
• JavaScript has Powerful Frameworks
•  JavaScript Codes are Triggered as per User Activity
• JavaScript Offers Procedural Programming Features
•  JavaScript Can Help Run Multiple Tasks at Once
•  JavaScript can Extend the Functionalities of Websites you Visit
• Building Multi-Functional Websites Require JavaScript
• JavaScript is Still Growing