How do you call an alert in HTML?

We are using the onclick attribute and call the fun() function where the alert() is defined.

</li><li>function fun() {</li><li>alert (“This is an alert dialog box”);</li><li>}</li><li>

What is alert box in JavaScript?

An alert box is one type of popup boxes in JavaScript which is often used to make sure that information have come through the user. So, the user will have to click “OK” to proceed when an alert box pops up on the window.

How you will write a JavaScript function that display an alert on the screen?

One useful function that’s native to JavaScript is the alert() function. This function will display text in a dialog box that pops up on the screen. Before this function can work, we must first call the showAlert() function. JavaScript functions are called in response to events.

What happens when JavaScript runs the alert () function?

One useful function that’s native to JavaScript is the alert() function. This function will display text in a dialog box that pops up on the screen. We can instruct JavaScript to watch for these events, and if or when they occur, execute the specified function.

What is the difference between alert () and prompt () in JavaScript?

alert. shows a message. prompt. shows a message asking the user to input text.

What is alert statement?

The alert() method displays an alert box with a specified message and an OK button. An alert box is often used if you want to make sure information comes through to the user. Do not overuse this method, as it prevents the user from accessing other parts of the page until the box is closed.

What is JavaScript function?

JavaScript provides functions similar to most of the scripting and programming languages. In JavaScript, a function allows you to define a block of code, give it a name and then execute it as many times as you want. A JavaScript function can be defined using function keyword.