What is an alert in JavaScript?

It consists of the information that we want to show to the users. Let’s see some examples of the JavaScript alert () method. In this example, there is a simple alert dialog box with a message and an OK button. Here, there is an HTML button which is used for displaying the alert box.

What is clientx in JavaScript?

Definition and Usage The clientX property returns the horizontal coordinate (according to the client area) of the mouse pointer when a mouse event was triggered. The client area is the current window. Tip: To get the vertical coordinate (according to the client area) of the mouse pointer, use the clientY property.

How to display a virtual alert box in JavaScript?

The alert () method in JavaScript is used to display a virtual alert box. It is mostly used to give a warning message to the users. It displays an alert dialog box that consists of some specified message (which is optional) and an OK button. When the dialog box pops up, we have to click “OK” to proceed.

What is clientx read-only in mouseevent interface?

The clientX read-only property of the MouseEvent interface provides the horizontal coordinate within the application’s client area at which the event occurred (as opposed to the coordinate within the page).

What happens when you open an alert on an inactive tab?

If an alert is opened on a an inactive tab, it will immediately come to the front and you will not be doing anything else until you actively dismiss it. This is commonly seen with banking websites which have a session timeout period and is generally referred to as “stealing the focus”. This is one of the most disruptive things you can do to a user.

Should I use a JavaScript alert when logging out a user?

Don’t use a JavaScript alert if you can avoid it. That means that you pick some other method of feedback. For instance, if you are a bank and a user’s session expires, there is no need to alert them that you are about to log them out. They have no choice in the matter, so just get on with it already.

What is an example of alert box?

Otherwise, it will show a warning message that the age is below 18 years. This warning message is the ‘Alert Box’. Another example is suppose a user is required to fill the form in which some mandatory fields are required to enter some text, but the user forgets to provide the input.

How to use the alert dialog box?

Rather than showing the warnings or errors, the alert dialog box can be used for normal messages such as ‘ welcome back’, ‘Hello XYZ’, etc. message: It is an optional string that specifies the text to display in the alert box. It consists of the information that we want to show to the users.