https://github.com/albertyw/ajax-cache-parser

A small function to calculate when an ajax request expires
https://github.com/albertyw/ajax-cache-parser

browser cache javascript

Last synced: 4 months ago
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A small function to calculate when an ajax request expires

• Host: GitHub
• URL: https://github.com/albertyw/ajax-cache-parser
• Owner: albertyw
• License: mit
• Created: 2015-11-01T01:45:20.000Z (over 9 years ago)
• Default Branch: master
• Last Pushed: 2024-12-23T18:28:32.000Z (7 months ago)
• Last Synced: 2025-03-18T18:01:26.231Z (4 months ago)
• Topics: browser, cache, javascript
• Language: JavaScript
• Homepage:
• Size: 265 KB
• Stars: 2
• Watchers: 2
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • License: LICENSE

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README

        
ajax-cache-parser

=================

[![NPM](https://nodei.co/npm/ajax-cache-parser.png?downloads=true&downloadRank=true)](https://nodei.co/npm/ajax-cache-parser/)

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A small function to get when an ajax request expires

Given an XMLHttpRequest object that has received response headers back from a server, `getCacheExpiry` will return

a javascript `Date` object that represents when the response will expire based on the `Expires` and `Cache-Control`

response headers.  If caching headers are not present or are unparseable, `undefined` will be returned.  If caching

headers indicate that the resource should not be cached, `null` will be returned.

Example

-------

```javascript

function callback(){

  var expiration = parser.getCacheExpiry(this);

  // do something with expiration

}

var oReq = new XMLHttpRequest();

oReq.onload = callback;

oReq.open("get", yourUrl, true);

oReq.send();

```

Information about caching headers comes from: https://www.mnot.net/cache_docs/