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15 janv. 2011 · In response to req, you use res to send back the desired HTTP response. Those parameters can be named anything. You could change that code to this if it's more clear:
26 oct. 2010 · 2. Not an answer, but. It seems to be pretty commonplace to use the word "res" for one of the indexes in function arguments. Its existence appears to be agnostic to whatever programming language you look at. Nope. My guess is this is only common for Javascript doing http request/response (or a few very similar things).
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I don't see anyone mentioned the fact that the order of method calls on res object is important. I'm new to nodejs and didn't realize at first that res.json() does more than just setting the body of the response. It actually tries to infer the response status as well. So, if done like so: res.json({"message": "Bad parameters"}) res.status(400)
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16 juin 2018 · 15. expressjs - Response. the res object is an enhanced version of Node’s own response object and supports all built-in fields and methods. res.status (code) Sets the HTTP status for the response. It is a chainable alias of Node’s response.statusCode. So the result is the same. expressjs just added a chainable version of statusCode.
27 sept. 2013 · This will return a JSON number. res.json (100) This will return a status code and issue a warning to use sendStatus. res.send (100) If your argument is not a JSON object or array (null, undefined, boolean, string), and you want to ensure it is sent as JSON, use res.json. edited Apr 3, 2022 at 14:49.
31 oct. 2013 · The one that I have seen commonly being used is by using a command of the form: response.write(JSON.stringify(anObject)); However, this has two points where one could argue as if they were "problems": We are sending a string. Moreover, there is no new line character in the end. Another idea is to use the command:
23 juil. 2014 · Before the redirect I set the session like so: req.session['success'] = 'User added successfully'; res.redirect('users'); And on the users page I check for a success variable and pass that to my template if it exists, and then to reset it I just set it to null. This works perfectly for what I need.
