JavaScript for beginners - Chapter 3 - Uses and advantages of JavaScript

Uses of JavaScript :

JavaScript can be used in various activities like :
Data validation.
Display popup messages.
Handling different events of DOM elements.
Modifying style of DOM elements .

Advantages of JavaScript:
JavaScript is easy to learn.
Form validation can be done on the client side, which reduces the unnecessary round trips between the client and the server. This also means the load on the server is reduced and the application is more responsive.
JavaScript executes on any Operating System.
JavaScript can be used with any type of web page
e.g. PHP, ASP.NET etc.
With JavaScript partial page updates are available i.e only portions of the page can be updated, without reloading the entire webpage. This is commonly called as AJAX.
JavaScript can also be used to animate elements on page.
example : Showing or hiding elements and sections of the page.

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