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Javascript Popup alert

 

The javascript alert() method (pop-up) displays an alert box with a specified message and an OK button.

An alert box is often provided if you want to make sure information comes through to the user.

 

Syntax:

 

alert(message)

 

EXAMPLE:

 

<!DOCTYPE html>
<html>
<body>

<p>Click the button to demonstrate line-breaks in an alert box.</p>

<button onclick="myFunction()">Try it</button>

<script>
function myFunction() {
 alert("Hello\nHow are you?");
}
</script>

</body>
</html>

 

OUTPUT:

 

Javascript Popup alert