How to parse HTTP status codes in Node?

Question

I'm using an API library in Node that doesn't return the status code of the HTTP response. However, it does return the response headers, which look like this:

{ ...
  status: '200 OK',
  ... }

Is there any Node library I can use to parse the status code from the returned object's status? Will a crude +res.status.slice(0, 3) do?

EDIT: Link to the library.

`parseInt('200 OK', 10);` will yield the integer 200, which I assume you want but it has the drawbacks that you're now relying on the fact that the status codes need to start with the actual error code and not the text, otherwise just `status.split(' ')[0]`. — Henrik Andersson, Jan 18 '16 at 20:48
@HenrikAndersson: if the status code isn't in the first three characters then it's not a status code. — Julian Reschke, Jan 19 '16 at 06:22
@JulianReschke I was just pointing out a potential pitfall, is all. :) — Henrik Andersson, Jan 19 '16 at 06:35
@HenrikAnderson: why would it be a pitfall when parsing an invalid response fails? — Julian Reschke, Jan 19 '16 at 06:39
@JulianReschke Because parsing would not fail audibly but just produce a NaN, which you can pass around. — Henrik Andersson, Jan 19 '16 at 06:42

score 1 · Accepted Answer · answered Jan 18 '16 at 20:49

1

All HTTP status codes have 3 digits, so your slice example will work. However, I would personally just split on space:

var code = status.split(' ')[0];

answered Jan 18 '16 at 20:49

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How to parse HTTP status codes in Node?

1 Answers1