Entering a non-numeric value should cause an error notification.
输入一个非数字值就会出现一个错误通知。
The only concern with this code — and the reason most Ajax programmers don't use this approach — is that it delays error notification.
此代码惟一的问题是推迟了错误通知，这也是多数Ajax程序员不采用这一方法的原因。
Exceptions offer several advantages over other methods of error notification, such as return codes.
与其他错误通知方法(如返回代码)相比，异常具有若干优点。
Error, notification (alert), and confirmation messages are blocking bulletin dialogs. As we shall see, even these can and should be avoided in most circumstances.
错误、通知(警告)和确认消息都是阻塞型公告对话框，我们将看到在大多数情况下就算是这些也都能够避免，并且应该避免。
Error, notification (alert), and confirmation messages are blocking bulletin dialogs. As we shall see, even these can and should be avoided in most circumstances.
错误、通知(警告)和确认消息都是阻塞型公告对话框，我们将看到在大多数情况下就算是这些也都能够避免，并且应该避免。
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