javascript global error handler

For JavaScript errors, such as XXX undefined,syntaxerror, we are more familiar with, this article we discuss how the JavaScript error capture.Our team names the wrong JavaScript code as BADJS, and there is an open source Badjs project that captures and analyzes JS errors and provides some basic analysis of report data.

The try-catch method was used in the past. In the catch statement, we will receive an error object (we can also throw a custom exception object ). The error object in Firefox has the following attributes: Message -- error messageFilename -- indicates an error occurred.CodeFileLinenumber -- number of lines where the

JavaScript is a dynamic scripting language with a high degree of grammatical freedom and incomplete design maturity. Because of its highly flexible syntax and a variety of other reasons, the code written with it is extremely readable (at least I feel). In contrast, the Python language syntax is most recommendable in many of the languages I have known.In this article I try to record and gradually add to the use of JS

The try-catch method was used in the past. In the catch statement, we will receive an Error object (we can also throw a custom exception object ). The Error object in Firefox has the following attributes:Message -- error messageFileName -- indicates the file where the error code is locatedLineNumber -- number of lines

handler function. After checking the relevant documentation, I found that the bound error handler received three parameters: View Sourceprint?function OnError (message,url,line) {} It is very gratifying that this mechanism is compatible with IE and Firefox. Here's an example: Copy Code code as follows: function dosomething () { var lasterror

than 10 or less than 0 or is not a number, the error is thrown (throw). When the error is captured by the catch parameter, a custom error message is displayed.JavaScript onerror EventsDescription: Using the OnError event is an old-fashioned standard method of capturing Javascript errors in a Web page.Chrome, opera, Sa

This article mainly describes how to capture and analyze JavaScript Error, interested friends can refer to the following How to capture and analyze JavaScript errornbsp; nbsp; Front-End engineers know that JavaScript has basic exception handling capabilities. We can throw the new

How to capture and analyze JavaScript Error Front-end engineers know that JavaScript has basic exception handling capabilities. We can throw the new error () and the browser throws an exception when we invoke the API error. But it is estimated that most front-end engineers

Front-end engineers know that JavaScript has basic exception handling capabilities. We can throw the new error () and the browser will throw an exception when we call the API error. But it is estimated that most front-end engineers have not considered collecting these anomaly information.Anyway, as long as the JavaScript