Error原生类型的扩展

•Error.create(message, errorInfo)方法：
–创建新的Error对象
–将Error对象的错误信息属性设为message
–将errorInfo上的信息附加到Error对象
•Error.prototype.popStackFrame()方法：
–为Error对象整理出更优雅直观的信息（lineNumber, stack）
–对于IE无效
–如果一个方法仅仅是返回Error对象而不是抛出对象，则在返回前应该调用该方法

aspx

<%@ Page Language="C#" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<script runat="server">

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Error Type Extensions</title>
    <script language="javascript" type="text/javascript" src="Error.js"></script>
</head>
<body>
    <form id="form1" runat="server">
        <asp:ScriptManager ID="ScriptManager1" runat="server" />

        please view the page in FireFox
        <script language="javascript" type="text/javascript">
            try
            {
                throw getNiceError();
            }
            catch(e)
            {
                var errorMsg = ("Message: " + e.message + "\n");
                errorMsg += ("Line Number: " + e.lineNumber + "\n");
                errorMsg += ("File Name: " + e.fileName + "\n\n");
                errorMsg += ("Stack Trace:\n" + e.stack);
                alert(errorMsg);
            }
        </script>
    </form>
</body>
</html>

Error.js

posted on 2008-05-04 11:15 一粒沙阅读(232) 评论(0) 编辑收藏举报