Lesson 4 - Basic Interaction

4.1 Alert

The alert method in JavaScript displays a dialog box with a message and an "OK" button, which is commonly used to share information or provide notifications to the user. Here's how you can use it:

alert("Hello, world!");

When you execute this code in a browser environment, it will display a simple dialog box with the message "Hello, world!" and an "OK" button that the user can click to dismiss the alert.

This method is useful for showing important messages or alerts that require immediate attention from the user.