Javascript Alert Boxes

An alert box is a pop-up message box that displays an alert message to the user. It can be used to inform the user about an error or to display a message. It’s helpful to use to debug code that may not be executing correctly.

Here’s how you can create an alert box in JavaScript:

1. Open your code editor and create a new HTML file.
2. Add a button to your HTML file. For example:
   <button onclick="alert('Hello, World!')">Click me</button>
3. The onclick attribute will trigger the alert box when the button is clicked.
4. Save the HTML file with a .html extension and open it in your web browser.
5. Click the button, and you should see an alert box with the message “Hello, World!”. You can change that text to anything you want.*

If done correctly, the above code will produce this: Click me

*Pressing enter and going to a new line in the quotations will cause the alert box to break. So while the above code will work, the following will not:
<button onclick="alert('Hello,
World!')">Click me</button>
To get around that, you’ll need to do a new line escape sequence using \n:
<button onclick="alert('Hello, \n World!')">Click me</button>

There you have it, your very first JavaScript code!