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Res Type

_includes/api/en/5x/res-type.md

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<h3 id='res.type'>res.type(type)</h3>

Sets the Content-Type HTTP header to the MIME type as determined by the specified type. If type contains the "/" character, then it sets the Content-Type to the exact value of type, otherwise it is assumed to be a file extension and the MIME type is looked up using the contentType() method of the mime-types package.

js
res.type('.html') // => 'text/html'
res.type('html') // => 'text/html'
res.type('json') // => 'application/json'
res.type('application/json') // => 'application/json'
res.type('png') // => image/png:

Aliased as res.contentType(type).