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Req Is

_includes/api/en/3x/req-is.md

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<h3 id='req.is'>req.is(type)</h3>

Check if the incoming request contains the "Content-Type" header field, and it matches the give mime type.

js
// With Content-Type: text/html; charset=utf-8
req.is('html')
req.is('text/html')
req.is('text/*')
// => true

// When Content-Type is application/json
req.is('json')
req.is('application/json')
req.is('application/*')
// => true

req.is('html')
// => false