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How to display popup message boxes in JavaScript?

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.

What is the difference between alert dialog and dialog box?

Both produce: The alert dialog should be used for messages which do not require any response on the part of the user, other than the acknowledgement of the message. Dialog boxes are modal windows - they prevent the user from accessing the rest of the program's interface until the dialog box is closed.

How do I get a JavaScript alert if I'm not using JavaScript?

alert("hello"); if you're having problems with alerts, it probably means your javascript is disabled in your browser, but if it isn't these methods should solve your issue. window.alert("Hello World!"); alert("Hello World!"); Just add parantheses There are a few ways. Use your web browser, type this code in address bar.

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