JS 01: Introduction

JavaScript is a lightweight programming code written inside a HTML source code. Javascript provides same capability like writing a program but for a client side page. It can add interactivity for the web page and provides dynamic appearance for the web page.

It allows us to have variables, to do comparison statement, loop statement, functions and etc. Commonly used for validating data given by user, handles cookies and render CSS styling. However, JavaScript cannot directly access and manipulate a file or do operations related networking.

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