How to Create a Yes/No Confirmation Box in JavaScript

Sometimes, you just want an easy way to get a yes or no response from the user in the browser.

In this post, we'll be learning how to create a yes/no confirmation box in JavaScript to get that response from the user.

confirm()

The best way to create a yes/no confirmation box is to use the JavaScript confirm() function. This function will make the browser render a dialog box with a message and two buttons, an Ok and a Cancel button.

When the user interacts with this dialog box, it will return to you a boolean, true if the user clicked the Ok button and false if the user clicked the Cancel button.

Here's how to create a confirmation box using confirm():

	const response = confirm("Are you sure you want to do that?");

console.log(response);

Here's how the code above would look in the browser:

This is how a full HTML page using this code would look like:

	<!DOCTYPE html>
<html>
    <head>
        <title>JavaScript Yes/No Confirmation box</title>
        <script>
            const confirmAction = () => {
                const response = confirm("Are you sure you want to do that?");

                if (response) {
                    alert("Ok was pressed");
                } else {
                    alert("Cancel was pressed");
                }
            }
        </script>
    </head>
    <body>
        <button onclick="confirmAction()">
            Perform action
        </button>
    </body>
</html>

As a recap, after you get the response from the user, you can do something with it:

	const response = confirm("Are you sure you want to do that?");

if (response) {
    // add code if the user pressed the Ok button
    console.log("Ok was pressed");
} else {
    // add code if the user pressed the Cancel button
    console.log("Cancel was pressed");
}

With that, you've created a yes/no confirmation box in JavaScript.

Conclusion

In this post, we've seen how to create a yes/no confirmation box in JavaScript to get that response from the user.

From there, you can do whatever you need to do with that response.

Hopefully, this helped you out. Happy coding!

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