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Tag Archives: Express.js

The res.send() function basically sends the HTTP response. The body parameter can be a String or a Buffer object or an object or an Array.… Read More
The res.sendFile() function basically transfers the file at the given path and it sets the Content-Type response HTTP header field based on the filename extension. Syntax: … Read More
The res.download() function transfers the file at path as an ‘attachment’. Typically, browsers will prompt the user to download. Syntax: res.download(path [, filename] [, options]… Read More
The req.subdomains property contains an array of subdomains in the domain name of the request. The application property subdomain offset, which defaults to 2 which… Read More
The req.xhr property returns a true value if the request’s X-Requested-With header field is XMLHttpRequest which indicates that the request was issued by a client… Read More
The res.links() function is used to join the links provided as properties of the parameter to populate the response’s Link HTTP header field.Syntax:   res.links( links… Read More
The res.status() function set the HTTP status for the response. It is a chainable alias of Node’s response.statusCode. Syntax: res.status( code ) Parameter: This function… Read More
The res.cookie() function is used to set the cookie name to value. The value parameter may be a string or object converted to JSON.Syntax:   res.cookie(name,… Read More
The req.acceptsLanguages() function returns the first accepted language of the specified language on the basis of the request that Accept-Language HTTP header field and it… Read More
The res.type() function is used to set the Content-Type HTTP header to the MIME type determined by the mime.lookup() function for the specified type. Syntax:   res.type(… Read More
The express.json() function is a built-in middleware function in Express. It parses incoming requests with JSON payloads and is based on body-parser. Syntax: express.json( [options]… Read More
The req.acceptsEncodings() function returns the first accepted encoding of the specified encodings on the basis of the request Accept-Encoding HTTP header field and it returns… Read More
The req.acceptsCharsets() function returns the first accepted charset of the specified character sets on the basis of the request’s Accept-Charset HTTP header field otherwise it… Read More
The express.raw() function is a built-in middleware function in Express. It parses incoming request payloads into a Buffer and is based on body-parser. Syntax: express.raw(… Read More
The express.urlencoded() function is a built-in middleware function in Express. It parses incoming requests with urlencoded payloads and is based on body-parser.Syntax:   express.urlencoded( [options] )… Read More

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