Use alert Boxes in JavaScript

Description

The following code shows how to use alert Boxes.

Example


<!--   www .java2s  . c om-->
<!DOCTYPE html>
<html>
<head>
<script type="text/javascript">
alert("Hello from JavaScript!")
</script>
</head>
<body>
</body>
</html>

Click to view the demo

The code above generates the following result.

Use alert Boxes in JavaScript
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