Throw exception out of a function in JavaScript

Description

The following code shows how to throw exception out of a function.

Example


<!DOCTYPE html>
<html>
<body>
<script type="text/javascript">
function getMonthName (monthNumber) {<!-- w  ww.  j a  v a2 s .  co m-->
throw "InvalidMonthNumber"
}
try {
alert(getMonthName(13))
}
catch (exception) {
alert("An " + exception + " exception was encountered.  Please contact the program vendor.")

}

</script>
</body>
</html>

Click to view the demo

The code above generates the following result.

Throw exception out of a function in JavaScript

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