So, let’s get started. Declaring variables Nowadays JavaScript has three different keywords to declare a variable — var, let and, const. Each has its own properties and particularities.

All JavaScript programming happens in an environment like a web browser, Node, or Bun.js. Each of these environments has its own set of pre-defined variables like window and console.

Developers use statements to control the overall program flow, including variable declarations, conditional operations, and iterative processes. Here's how to write JavaScript statements.

JavaScript vs. TypeScript example TypeScript's type system has a minor impact on how variables are referenced and declared, yet it has a huge impact on maintainability and consistency. For example, ...