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parsehttpdate
Advanced tools
Changelog
1.0.1
(No changes)
Readme
Parses date-times which have the preferred format as defined by HTTP/1.1. An example of such a date-time is:
Tue, 15 Nov 1994 08:12:31 GMT
This format is used in HTTP headers such as Date, Last-Modified, and Expires. It is a subset of the specification used by the Internet Message Format. Note that the HTTP/1.1 specification also defines two obsolete formats, which this implementation does not support.
import parseHttpDate from 'parsehttpdate';
parseHttpDate('Wed, 21 Oct 2015 07:28:00 GMT');
This is how you can determine the time according to your server:
import parseHttpDate from 'parsehttpdate';
fetch('/')
.then(({headers}) => {
if (headers.has('Date')) {
return headers.get('Date');
} else /* if (false == headers.has('Date')) */ {
throw new Error('The response lacks a Date header');
}
})
.then(parseHttpDate)
.then(date => {
console.log(date.toTimeString());
});
This is the same example using an async function:
import parseHttpDate from 'parsehttpdate';
async function getServerDate() {
const {headers} = await fetch('/');
if (headers.has('Date')) {
return parseHttpDate(headers.get('Date'));
} else /* if (false == headers.has('Date')) */ {
throw new Error('The response lacks a Date header');
}
}
getServerDate()
.then(date => {
console.log(date.toTimeString());
});
If you are fairly certain the input is formatted correctly, you can squeeze out some extra performance by turning off validation.
import parseHttpDate from 'parsehttpdate';
parseHttpDate('Wed, 21 Oct 2015 07:28:00 GMT', false);
Does your date-time look nothing like the example above, but rather something like this?
1994-11-06T08:49:37Z
Congratulations: your date-time is formatted according to ISO 8601. You don't need parseHttpDate. You don't need any library.
new Date('1994-11-06T08:49:37Z');
Copyright (c) 2018 Pimm "de Chinchilla" Hogeling
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
The Software is provided "as is", without warranty of any kind, express or implied, including but not limited to the warranties of merchantability, fitness for a particular purpose and noninfringement. in no event shall the authors or copyright holders be liable for any claim, damages or other liability, whether in an action of contract, tort or otherwise, arising from, out of or in connection with the Software or the use or other dealings in the Software.
FAQs
Parses the value of the Date header in HTTP responses
The npm package parsehttpdate receives a total of 72 weekly downloads. As such, parsehttpdate popularity was classified as not popular.
We found that parsehttpdate demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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