As we all know, Node.js is a popular JavaScript runtime that uses the same V8 engine as Google Chrome browser. Node.js is cross-platform and has become a mainstream option for server-side web application development, tool building, and command-line applications.
But friends who have experienced Node.js often find that once the code is written and tried to run, it is often difficult to easily deal with the hidden problems. If you're lucky, the code will crash with a clear error message; but if you're unlucky, the application will still barely work, but the results will be far from what the developer expected.
1. What is debugging
The so-called debugging refers to the process of reproducing software defects, locating and finding the source of the problems, and finally solving the problems. The ultimate goal of software debugging is to repair software defects. In fact, repairing software defects is not a sophisticated technology. Most bugs are actually caused by mistyped characters or small problems in code lines, but it is extremely difficult to find bugs and locate problems. Developers often spend a lot of time trying to peel back the threads and figure out the root cause of the problem.
In order to help everyone effectively avoid errors, good programming habits are very important. Here are some suggestions for avoiding errors:
- Use a high-quality code editor, which should have functions such as line numbering, color coding, code verification, auto-completion, bracket matching, and parameter prompts.
- Use a source control system such as Git to manage proxy revision work. These tools help developers check for updates and pinpoint how, when, and where bugs appear.
- Use a bug tracking system such as Jira, FogBugz, Bugzilla, etc. They can report bugs to developers, highlight duplicates, document steps to reproduce, determine bug severity, calculate priority, assign developers, record discussion threads, and track fix progress.
- Use a test-driven development (TDD) approach. TDD is a development process that encourages developers to code and test how a function works before writing it.
- Try collaborating with other developers using techniques like code interpretation or pair programmingÿ