Javascript debugging is not very good. Once an error occurs, it is also an ugly warning. I remember someone told me that even if something goes wrong, it should be different from others.
Sometimes, the warning is still invisible (set based on the browser), so I decided to make an error Prompt window to facilitate debugging.
In IE, it's easy to get it done. Window. onerror is enough. However, in Firefox, there is a problem, and the error prompt is never displayed. I checked the information and said that there is no window. event under ff. I 've been depressed for a long time and I 've always wanted to manually add one to it. After trying several methods, an error was accidentally reported. Hmm? Can it still be captured? After reading this, it is a page error, but it is not prompted. It is an error in Ajax asynchronous callback. Is this the problem?
I tried it, but the error FF in the callback could not be captured. How can I use a try to call a function? Try again. OK. So far, the problem has been solved for a long time. In this way, if an error occurs, a prompt box will be displayed to beautify the page. Well, you can.
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