?? throwexample.htm
字號:
<html>
<head>
<title>Try Catch Example</title>
<script type="text/javascript">
function addTwoNumbers(a, b) {
if (arguments.length < 2) {
throw new Error("Two numbers are required.");
} else {
return a + b;
}
}
try {
result = addTwoNumbers(90);
} catch (oException) {
alert(oException.message); //outputs "Two numbers are required."
}
</script>
</head>
<body>
</body>
</html>
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