01. What is jQuery ?


What is jQuery?
jQuery is :

jQuery is one of the most popular, easy to learn, open source, cross browser, cross platform, JavaScript library.

Open source (free):
The original source code is freely available to read, understand, modify, use and extend according to user requirements.

Cross browser (browser independent):
It works in almost all modern browsers like IE9, Google chrome, Firefox, Safari, Opera etc.

Cross platform (platform independent):
It works in almost all platforms like windows, Linux, Mac OS, Android etc.

JavaScript library (API: Application Program Interface):
It is written in JavaScript.
It is the collection of pre-written and reusable JavaScript objects, methods (functions), which we can use while designing web sites or developing web applications easily.

jQuery website link: https://jquery.com/

Interview Questions: