Prompting the user
There are three functions you can call which will force the user to acknowledge them. These are
- alert()
- confirm()
- prompt()
alert()
If you would like to present the user with a notice before allowing them to continue using your web page, you can display an alert.
<a href="javascript:alert('Hello, World!'">See Demo</a>
<script language="javascript">
<!--
alert("Hello, World!");
-->
</script>
confirm()
To prompt the user with a Yes/No message box you can call confirm, using its return value as the result.
<script language="javascript">
<!--
var result = confirm("Are you sure?");
if (result)
alert("You clicked OK");
else
alert("You clicked cancel");
-->
</script>
prompt()
xxx
<script language="javascript">
<!--
var name = prompt("What is your name?","Mickey Mouse");
alert(name);
-->
</script>