JSP 1 : Variables, Data Types, Operators

JavaScript is a high-level, interpreted programming language primarily used for client-side scripting to create interactive and dynamic web pages. Variables in JavaScript are containers that store values or data, and they can be declared, initialized, and assigned values using keywords such as var, let, or const. The process of accessing a variable's value is called a variable lookup expression, which can be done using console.log, for example. In the example code, the variable "greeting" is declared and initialized with the value "Hello, World!", and then its value is accessed and printed to the console using console.log.