Try catch user exception in JavaScript

Description

The following code shows how to try catch user exception.

Example


<html>
<head>
<script type="text/javascript">
<!--   w w w  .  jav  a  2 s.  com-->
function addTwoNumbers(a, b) {
throw new Error("Two numbers are required.");
}

try {
result = addTwoNumbers(90);
} catch (oException) {
alert(oException.message);
}

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

Click to view the demo

The code above generates the following result.

Try catch user exception in JavaScript

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Try catch user exception in JavaScript