JS Tutorial

JavaScript Syntax

JavaScript Syntax refers to the set of rules that define a correctly structured JavaScript program. JavaScript syntax dictates how programs should be written so the browser can understand and execute the code.

📐 Basic Syntax Rules:

• Statements are the basic building blocks of JavaScript code. They can be expressions, variable declarations, or function calls.
• Semicolons are used to terminate statements. Though optional, it's a good practice to end statements with semicolons.
• Case Sensitivity: JavaScript is case-sensitive, meaning Variable and variable would be considered different.
• Whitespace: JavaScript ignores extra spaces and tabs, so you can use them for readability without affecting the code.
• Comments: Lines that are ignored by the browser and are used for code explanation or reminders. (Single-line comments use // and multi-line comments use /* */)

🧪 Live Example:

Click the button below to see an example of basic JavaScript syntax in action:

🔧 Syntax Breakdown:

• let message = "This is a JavaScript example!"; → This is a declaration of a variable using the let keyword.
• // Single-line comment → This is a single-line comment used for quick notes.
• /* Multi-line comment */ → Multi-line comments are useful for larger code explanations or commenting out multiple lines of code.

📱 Responsive Layout Tip:

Always keep your syntax simple and readable. Good formatting improves code readability and helps prevent errors.