What is js/JavaScript?

What is JavaScript?

JavaScript is a programming language used to make websites interactive and dynamic.

In simple words:

JavaScript = the brain of a website

What can JavaScript do?

Respond to button clicks

Validate forms (check user input)

Create animations

Update content without reloading the page

Build games and web applications

Example:

HTML

<!DOCTYPE html>

<html>

<body>

<button onclick=”showMessage()”>Click Me</button>

function showMessage() {

alert(“Hello! “);

}

</script>

</body>

</html>

When you click the button, a popup message appears.

HTML, CSS, JS together:

HTML Structure

CSS Design

JavaScript Functionality

Real-life example:

HTML = Structure of a house

CSS = Decoration and colors

JavaScript = Electricity (makes things work)

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