XHR/fetch Breakpoints Explained
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