CODEWITHSUNDEEP
htmldate
cdugga
cdugga

Reputation: 3859

getting the last modified date of a html file

how can i figure out the last modified date of a html file im importing into my web app?

The html file is on another server and different users can make updates, when i retrieve the page i want to be able see when it was last updated so i can label the updated date on my homepage. I

Upvotes: 8

Views: 19261

Answers (5)

Ciro Santilli OurBigBook.com
Ciro Santilli OurBigBook.com

Reputation: 382792

There are some proposed meta tag keys representing Dublin Core values that may be used. See: https://stackoverflow.com/a/14893974/895245

Upvotes: 1

Daniel Rikowski
Daniel Rikowski

Reputation: 72514

I assume you are using HTTP to retrieve the page.

In that case you can use the HEAD method of HTTP to get the header data of the file. (See http://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html, 9.4)

Then you can check the "Last-Modified" header of the response. (See http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html, 14.29)

In case of some caching mechanism (proxy, browser caching) it might be necessary to include "Cache-Control: must-revalidate" in the request header. (See http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html, 14.9.4)

Upvotes: 9

dogbane
dogbane

Reputation: 274592

<script type="text/javascript">
<!--
document.write(document.lastModified);
// -->
</script>

Upvotes: 2

Node
Node

Reputation: 22325

You could use the Last-Modfied Header from the response headers.

The Last-Modified entity-header field indicates the date and time at which the origin server believes the variant was last modified.

   Last-Modified  = "Last-Modified" ":" HTTP-date

Upvotes: 3

michaeljoseph
michaeljoseph

Reputation: 7153

Use the document.lastModified Javascript property.

quirksmode has a nice function to format the date too: http://www.quirksmode.org/js/lastmod.html

Upvotes: 7

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