Accessing http status code constants

I’m looking for a list of http status codes in Javascript. Are they defined in any implementation?

I’ve had a look at XMLHttpRequest, but only found readyState constants.

var xhr = new XMLHttpRequest();
console.log(xhr.DONE); //4

I’m looking for something like

console.log(xhr.statusCodes.OK); //200

Which obviously doesn’t exist on the xhr object.

Answer

Http status codes are maintained by the Internet Assigned Numbers Authority (IANA), whereas readyState is specific to XmlHttpRequest.

Therefore just go to a reputable source. The wikipedia article should suffice as this is not really a contentious topic – or, as commented, the official list can be found here

You could also wrap those you are interested in into a javascript object

var HttpCodes = {
   success : 200,
   notFound : 404
   // etc
}

usage could then be if(response == HttpCodes.success){...}