JavaScript Documentation

Introduction to JavaScript

JavaScript is a high-level, interpreted programming language that is one of the core technologies of the World Wide Web. It enables interactive web pages and can be used for server-side scripting, mobile app development, and more.

                    
                        // This is a JavaScript comment.
                        console.log("Hello, World!");
                        let x = 10;
                        var y = 5;
                        console.log(x + y);
                    
                

Variables and Data Types

JavaScript provides several primitive data types, including:

• Number: Represents numeric values.
• String: Represents textual data.
• Boolean: Represents truth values (true or false).
• Null: Represents the intentional absence of a value.
• Undefined: Represents a variable that has been declared but has not been assigned a value.

                    
                        let name = "John Doe";
                        let age = 30;
                        let isStudent = false;
                        let address = null;
                    
                

Control Flow

JavaScript allows you to control the flow of execution using conditional statements and loops.

• If...else statements: Execute different blocks of code based on a condition.
• Switch statements: A more concise alternative to multiple if...else statements.
• For loops: Repeat a block of code a specific number of times.
• While loops: Repeat a block of code as long as a condition is true.

                    
                        if (age >= 18) {
                            console.log("You are an adult.");
                        } else {
                            console.log("You are a minor.");
                        }
                        for (let i = 0; i < 5; i++) {
                            console.log(i);
                        }