Javascript Basics Development Tutorials, Guides & Insights

  let message = "The total is: " + 20; // "The total is: 20"

• Be cautious to avoid unexpected results.

• Documenting code logic.
• Temporarily disabling code during debugging.
• Adding notes or reminders for developers.

• Incorrect:

Functions are reusable blocks of code that perform a specific task.

function greet(name) {
    console.log("Hello, " + name);
}

greet("John");  // Output: Hello, John
greet("Alice");  // Output: Hello, Alice

• String: Text, enclosed in quotes.
• Number: Numeric values.
• Boolean: True or false.
• Array: A list of values.
• Object: A collection of key-value pairs.

let message = "Hello, World!";
let year = 2024;
let isActive = true;
let colors = ["red", "green", "blue"];
let person = {
  firstName: "Alice",
  lastName: "Doe",
  age: 25
};

console.log(message, year, isActive, colors, person);