What is the purpose of the alert function in JavaScript?

The alert function is used to display a dialog box with a specified message and an OK button. It's a way to provide information to the user and doesn't return any value.

How can I get user input in JavaScript?

The prompt function is used to get user input in JavaScript. It displays a dialog box with a specified message and an input field, and returns the input value as a string.

What does the confirm function return in JavaScript?

The confirm function displays a dialog box with a specified message and two buttons, OK and Cancel. It returns true if the user clicks OK and false if the user clicks Cancel.

Can I customize the look of JavaScript dialog boxes?

The look of alert, prompt, and confirm dialog boxes is determined by the browser and cannot be customized with JavaScript. However, you can create custom dialog boxes using HTML, CSS, and JavaScript.

How does JavaScript interact with HTML and CSS?

JavaScript can interact with HTML and CSS through the Document Object Model (DOM). It can be used to change the content and style of HTML elements, respond to user events, and create dynamic web pages.

Can I use JavaScript to change the content of an HTML element?

Yes, you can use the innerHTML property to change the content of an HTML element. For example, document.getElementById("demo").innerHTML = "Hello, JavaScript!";

Can I use JavaScript to change the style of an HTML element?

Yes, you can use the style property to change the style of an HTML element. For example, document.getElementById("demo").style.fontSize = "25px";

How can I store the value returned by the prompt function in a variable?

You can store the value returned by the prompt function in a variable like this: let name = prompt("What's your name?", "Guest");

What happens if the user clicks "Cancel" in a prompt dialog box?

If the user clicks "Cancel" in a prompt dialog box, the function returns null.

What happens if the user clicks "Cancel" in a confirm dialog box?

If the user clicks "Cancel" in a confirm dialog box, the function returns false.

JavaScript Interactions: Alert, Prompt, and Confirm

Introduction

Hello there, JavaScript enthusiasts! Today, we’re going to dive into the world of JavaScript interactions. We’ll be focusing on three key players: alert, prompt, and confirm. These are the bread and butter of user interactions in JavaScript, and mastering them is like getting a backstage pass to the JavaScript concert. So, are you ready to rock and roll? Let’s get started!

JavaScript Alert

First up, we have the alert function. This is like the drummer of our JavaScript band – it sets the beat and gets everyone’s attention.

alert("Hello, World!");

JavaScript

JavaScript Interactions: Alert, Prompt, and Confirm

Introduction

Table of Contents

JavaScript Alert