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Which of the following object is used to post the data to an external process, say savePerfData?

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Which of the following object is used to post the data to an external process, say savePerfData?

(a) XML

(b) XBT

(c) XHR

(d) XTR

I got this question at a job interview.

The above asked question is from JavaScript Benchmarking and Logging with perfLogger in chapter Parsing, Benchmarking and Logging of JavaScript

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Right option is (c) XHR

The best I can explain: XHR(XMLHttpRequest) is an API in the form of an object whose methods transfer data between a web browser and a web server. The benchmarking process will call the external process. We use XHR object to post the data to the external process.

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