The javascript prompt() is a method of the window object, just like alert() or confirm().
The point of the JavaScript prompt is to get information from the user before entering a page so that the information can be used throughout the site to give the visitor a personalized feel.
When a prompt box pops up, the user [...]

The JavaScript alert() is a method of the window object. It is a dialogue box that pops up and takes the focus away from the current window and forces the web browser to read the message. The user will have to click “OK” to proceed.
<script language=”javascript” type=”text/javascript”>
alert(’This is an alert message’);
</script>
The text placed inside the [...]

Include and require are both used to insert the content of one PHP file into another PHP file. These two functions are identical. What makes the difference is the way they handle errors.
If an error occurs, the include() function generates a warning, but the script will continue execution. The require() generates a fatal error, and [...]