instanceof operator : instanceof « Development « JavaScript Tutorial






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<html>
<head>
<title>Try Catch Example</title>
<script type="text/javascript">
try {
    eval("a ++ b");        //causes SyntaxError
} catch (oException) {
    if (oException instanceof SyntaxError) {
        alert("Syntax Error: " + oException.message);
    } else {
        alert("An unexpected error occurred: " + oException.message);
    }
}
</script>
</head>
<body>
</body>
</html>








4.8.instanceof
4.8.1.instanceof operator