News for hackers. Stuff that matters.

A comment on Show HN: This page exists only if someone is looking at it. Parent comment

Re:Show HN: This page exists only if someone is looking at it by oh_sigh on Tuesday May 12, 2015 @12:27PM (#9532870)
Then said link is in violation of web standards that have existed for literally decades. I believe I've heard stories about google bots deleting entire forums, because the forums performed destructive actions via GET calls to specific URLs.

If what you said makes sense to you, ask yourself how google can crawl any URL at all, considering communicating anything to any server could trigger a destructive action.

[ Parent | on HN ]
Re:Show HN: This page exists only if someone is looking at it by ryanbrunner on Tuesday May 12, 2015 @01:35PM (#9533449)
I'm curious how one-click unsubscribes continue to function, then. Wouldn't those need to be GET requests (due to being a link)?
[ Parent | on HN ]
Re:Show HN: This page exists only if someone is looking at it by dankohn1 on Tuesday May 12, 2015 @01:57PM (#9533605)
Take a look. All modern unsubscribes are a get followed by a post for exactly this reason.
[ Parent | on HN ]
Re:Show HN: This page exists only if someone is looking at it by toomuchtodo on Tuesday May 12, 2015 @02:20PM (#9533775)
Today I learned!
[ Parent | on HN ]
Re:Show HN: This page exists only if someone is looking at it by frankzinger on Wednesday May 13, 2015 @12:04PM (#9539950)
Beware, one of the unwritten laws of HN is that any post containing anything vaguely reminiscent of reddit gets downvoted. Upvoted in order to pre-empt the inevitable downvote.
[ Parent | on HN ]
Re:Show HN: This page exists only if someone is looking at it by toomuchtodo on Wednesday May 13, 2015 @12:13PM (#9540008)
Thanks! I wasn't attempting to bring something reddit-esq to HN, I simply enjoy learning new tidbits everyday on HN!
[ Parent | on HN ]
Re:Show HN: This page exists only if someone is looking at it by ZainRiz on Tuesday May 12, 2015 @11:50PM (#9536641)
Would you consider an unsubscribe page that used javascript to automatically make a PUT/POST unsubscribe call on pageload bad practice then?

The google-bots wouldn't affect it since they don't run javascript

[ Parent | on HN ]
Re:Show HN: This page exists only if someone is looking at it by nikaspran on Wednesday May 13, 2015 @02:53AM (#9537243)
Google seems to be running JavaScript for a while now:

I.e.: http://searchengineland.com/tested-googlebot-crawls-javascri...

[ Parent | on HN ]
Re:Show HN: This page exists only if someone is looking at it by svieira on Tuesday May 12, 2015 @01:54PM (#9533590)
They do and they are (at least where I have worked) but it seems that Google et. alia are smart enough to not follow links marked containing text with the value "Unsubscribe".
[ Parent | on HN ]