You can use DateTime to get DateTime values, generate new DateTime values and format DateTime values (parse strings into DateTime or DateTime in the string format).

JavaScript Operators have a predefined order of precedence which are used to process and evaluate a JavaScript expression. JavaScript Operator Precedence is similar to the Mathematical Operator Precedence and Associativity.

A JavaScript program is simply a sequence of one or more JavaScript statements. JavaScript Statements is used to define the logic to make something happen.

In this chapter we take an overview of the basic building blocks of JavaScript: operators, expressions.JavaScript Expression is a combination of values, variables, operators, and functions that are interpreted (evaluated) as per the program logic define(develop) by JavaScript programmer.

JavaScript has some reserved keywords which can not be used as an identifier. Using JavaScript Reserved KeyWords as an identifier for variable names, function names, and loop labels results in error.

JavaScript Variables are the main building blocks of JavaScript Scripting language. JavaScript Variables are used for storing (contains) the data (value) and manipulate that data in your programs.

JavaScript Literals are the notation for representing a fixed data value that appears directly in a JavaScript program.

JavaScript Comments allows us to add remarks and a well written explanation about the working of JavaScript code.

JavaScript is most popular, commonly used, object-oriented, client-side scripting language. JavaScript widely used in tasks ranging from the form data validation to the development of enhanced user interfaces and dynamic websites.

JavaScript is mostly used as a client-side scripting language. With Client-side JavaScript, we are able to interpreter with the Document Object Model (DOM) of a web browser.