professional-javascript-14-AssertExample.htm / htm
<html>
<head>
<title>Try Catch Example</title>
<script type="text/javascript">
function assert(bCondition, sErrorMessage) {
if (!bCondition) {
throw new Error(sErrorMessage);
}
}
function addTwoNumbers(a, b) {
assert(arguments.length == 2, "Two numbers are required.");
return a + b;
}
try {
result = addTwoNumbers(90);
} catch (oException) {
alert(oException.message); //outputs "Two numbers are required."
}
</script>
</head>
<body>
</body>
</html>
(C) Æliens 20/2/2008
You may not copy or print any of this material without explicit permission of the author or the publisher. In case of other copyright issues, contact the author.
