AbdurCodes

In JavaScript, the debugger statement is a powerful tool for pausing code execution and launching the browser's built-in debugger . This allows you to inspect the state of your program at that specific point, examine variables, step through code line by line, and fix any bugs or errors. Here's a breakdown of its key uses: 1. Pausing Execution: When the debugger statement is encountered, code execution halts at that line. This gives you a chance to: Use the browser's debugger console to inspect variables , their values, and their types. Check the call stack to see how you got to that specific point in the code. Set breakpoints to pause execution at other points for further inspection. 2. Debugging: By examining variables and the program's state, you can identify the source of errors , logic flaws, or unexpected behavior. You can then modify the code or values, resume execution, and see if the issue is resolved. 3. Understanding Complex Code: For intricate logic or unfa

XHR/fetch breakpoints are a type of breakpoint available in modern browser developer tools like Chrome DevTools, Firefox Developer Tools, and Microsoft Edge DevTools. They allow you to pause code execution specifically when an XHR (XMLHttpRequest) or Fetch API request occurs . This is incredibly useful for debugging and analyzing network traffic related to your web application. Here's what you need to know about XHR/fetch breakpoints: Triggering Conditions: These breakpoints trigger based on the URL of the request . You can specify a full URL, part of the URL (e.g., using wildcards), or even regular expressions to match specific patterns. Some tools might also offer options to break on specific HTTP methods (GET, POST, etc.) or request types (main request, sub-requests). Benefits: Pinpointing network issues: Use them to identify slow or failed requests, analyze response data, and debug API calls. Understanding request flow: See the order and timing of multiple requests made by yo