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What is the use of response.writeHead() in Node.js?

What is the use of response.writeHead() in Node.js?

Geek Evident Asked on November 28, 2017 in Node JS.
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      Sends a response header to the request. The status code is a 3-digit HTTP status code, like 404. The last argument, headers, are the response headers. Optionally one can give a human-readable statusMessage as the second argument.

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      Geek Evident Answered on June 25, 2018.
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