node.js debugging

Node.js debugging can use console.log() to output debugging information, breakpoint debugging and third-party debugging tools. Detailed introduction: 1. Console.log() outputs debugging information. By inserting console.log() statements into the code, developers can output the values ​​of variables, function execution results and other information on the console to observe the execution process of the code. and status; 2. Breakpoint debugging, you can set breakpoints in the code to pause the execution of the code at a specific location, observe the value of variables and the execution process, etc.