onerrorexample5.htm

来自「这是javascript高级程序设计的源码」· HTM 代码 · 共 18 行

HTM
18
字号
<html>
    <head>
        <title>OnError Example</title>
        <script type="text/javascript">
            window.onerror = function (sMessage, sUrl, sLine) {
                alert("An error occurred:\n" + sMessage + "\nURL: " + sUrl + "\nLine Number: " + sLine);
                return true;
            }
            alert("Syntax error.";
        </script>
    </head>
    <body onload="nonExistentFunction()">
        <p>The syntax error on this page comes <em>after</em> the <code>onerror</code>
        event handler is defined, so the custom dialog catches it.</p>
        <p><strong>Note:</strong> This may not work in newer browsers with tighter security restrictions.</p>
    </body>
</html>

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