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The alert() method displays an alert box with a message and an OK button. The alert() method is used when you want information to come through to the user.
JavaScript Popup Boxes. Previous Next . JavaScript has three kind of popup boxes: Alert box, Confirm box, and Prompt box. Alert Box. An alert box is often used if you want to make sure information comes through to the user. When an alert box pops up, the user will have to click "OK" to proceed. Syntax. window.alert (" sometext ");
Oct 4, 2023 · window.alert() instructs the browser to display a dialog with an optional message, and to wait until the user dismisses the dialog. Under some conditions — for example, when the user switches tabs — the browser may not actually display a dialog, or may not wait for the user to dismiss the dialog.
JavaScript provides built-in global functions to display popup message boxes for different purposes. alert (message): Display a popup box with the specified message with the OK button. confirm (message): Display a popup box with the specified message with OK and Cancel buttons.
Feb 8, 2024 · The JavaScript alert() function is a function available on the global window object. It commands the browser to display a modal dialog with a message and an “OK” button. Here’s a basic example of usage: alert( "Hello world!" ); // Which is quivalent to: window .alert( "Hello world" ); Code language: JavaScript (javascript)
JavaScript alert. Summary: in this tutorial, you will learn how to display an alert dialog by using the JavaScript alert() method. Introduction to JavaScript alert() method. The browser can invoke a system dialog to display information to the user. Click here to show the alert system dialog.
Alerts. Alert messages can be used to notify the user about something special: danger, success, information or warning.
Aug 3, 2021 · Finally, if you aren't already, you need to put it in a script block, like this: alert("Hello!"); You can put JavaScript inside a script tag in an HTML page, or you can make a standalone .js file and double-click on it (in Windows) to run it using WSH.
Feb 15, 2024 · In JavaScript, you can use the alert() function to display an alert box with a message to the user. The alert box typically contains a message and an OK button, allowing the user to acknowledge the message.
Jan 25, 2020 · How to Build a JavaScript Alert Box or Popup Window. Popup boxes (or dialog boxes) are modal windows used to notify or warn the user, or to get input from the user. Popup boxes prevent the user from accessing other aspects of a program until the popup is closed, so they should not be overused.
