Dialogue Boxes

alert()

Very simply displays a popup alert box, with a single OK button:

alert("Message goes here!");

 

 

prompt()

Displays a prompt box, requesting text to be entered, which can be assigned to a variable:

<html>
	<head>
		<title>JavaScript</title>
	</head>
	<body>
		<script>
			var myName = prompt("Please enter your name.");

			document.write("You entered: " + myName);
		</script>
	</body>
</html>

 

 

confirm()

Displays popup confirmation box with OK and cancel buttons:

<html>
	<head>
		<title>JavaScript</title>
	</head>
	<body>
		<script>
			var cont = confirm("Do you want to carry on?");

			if (cont) {
				document.write("You pressed OK.");
				return true
			} else {
				document.write("You pressed cancel.");
				return false
			}
		</script>
	</body>
</html>

 

 

To get a new line in a dialogue box use the escaped \n sequence.

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