尝试在 javascript 中捕获错误 - 获取更多错误详细信息
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try catch error in javascript - get more error details
提问by Hello-World
How can I get more error details from a javascript catch?
如何从 javascript 捕获中获取更多错误详细信息？
Are there more parameters to get more details from the caught error.
是否有更多参数可以从捕获的错误中获取更多详细信息。
try {
var s = null;
var t = s.toString();
} catch(err) {
alert(err);
}
回答by KernelPanik
The Error Objecthas several properties that you can use. One property you can use to get the message of the error, is .message, as in:
该错误对象有几个属性，你可以使用。您可以用来获取错误消息的一个属性是.message，如下所示：
catch(err) {
alert(err.message);
}
The .nameproperty returns the type of error as in:
该.name属性返回错误类型，如下所示：
catch(err) {
x = err.name;
// ... do something based on value of x
}
The name describes the type of error, and the value of .namecan be : EvalError, RangeError, ReferenceError, SyntaxError, TypeError, and URIError. You may decide to handle the error differently depending on the error type which is returned by the .nameproperty.
名称描述了错误的类型，其值.name可以是 : EvalError, RangeError, ReferenceError, SyntaxError, TypeError、 和 URIError。您可以决定根据.name属性返回的错误类型以不同方式处理错误。
A good tutorial can be found on JavaScriptKit. The is also an article on the error object at Mozilla Developer Network.
在JavaScriptKit上可以找到一个很好的教程。这也是Mozilla Developer Network上关于错误对象的文章。
回答by MMeersseman
Check this link out: Reference to Error.prototype
查看此链接： 参考 Error.prototype
Basically you have err.nameand err.message.
基本上你有err.name和err.message。
You also have a few vendor-specific extensions:
您还有一些特定于供应商的扩展：
Microsoft => err.descriptionand err.number.
微软 =>err.description和err.number.
Mozilla => err.fileName, err.lineNumberand err.stack.
的Mozilla => err.fileName，err.lineNumber和err.stack。
