JavaScript, like any programming language, has its own syntax—a set of rules that define how code is written. Understanding syntax is crucial because even a small mistake, like a missing bracket or a typo, can cause your code to fail. For example, JavaScript is case-sensitive, so console.log() is not the same as Console.Log(). Similarly, statements are the building blocks of a JavaScript program. Each statement performs a specific action, such as declaring a variable, performing a calculation, or printing a message.

To make your code easier to read and maintain, you can add comments. Comments are notes in your code that are ignored by the browser. They are useful for explaining what your code does or leaving reminders for yourself or others. In JavaScript, you can write single-line comments using // and multi-line comments using /* … */.