Question

What is the purpose of the property PerformanceTiming.fetchStart? (a) Browser ready to fetch input (b) Browser ready to fetch document (c) Browser ready to fetch summary (d) Browser ready to fetch output I got this question during a job interview. Enquiry is from Integrating the Performance Object with perfLogger in chapter Invocation and Performance Navigation of JavaScript Select the correct answer from above options JavaScript questions and answers, JavaScript questions pdf, JavaScript question bank, JavaScript questions and answers pdf, mcq on JavaScript pdf, JavaScript questions and solutions, JavaScript mcq Test , Interview JavaScript questions, JavaScript Questions for Interview, JavaScript MCQ (Multiple Choice Questions)

Answer 1

The correct choice is (b) Browser ready to fetch document To explain I would say: The PerformanceTiming.fetchStart read-only property returns an unsigned long long representing the moment, in milliseconds since the UNIX epoch, the browser is ready to fetch the document using an HTTP request. If there is no previous document, this value will be the same as PerformanceTiming.fetchStart.