Quick Answer
Global AJAX behaviors with $.ajaxSetup: set headers, timeout, and error handling globally so all $.ajax calls use them. Use $(document).ajaxStart(showSpinner) and ajaxStop(hideSpinner) for a global loading indicator. Use $(document).ajaxError(globalErrorHandler) for unhandled AJAX errors. Be careful - $.ajaxSetup affects ALL ajax calls, including plugin-internal ones.
Answer
Use ajaxStart and ajaxStop for global loaders. Use ajaxError for centralized error handling. Use $.ajaxSetup() for headers and tokens.
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SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
