writing a javascript client-side shopping cart
in [JavaScript]
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From: Jeremy J Starcher on 27 Apr 2010 11:27 On Mon, 26 Apr 2010 13:15:48 +0100, transkawa wrote: > can someone instruct on how to find directions for writing a client side > shopping cart. i prefer writing mine than using google checkout or > whatever exists on the internet because of the peculiarities of the > region i am coming from. > will really appreciate any online references. xnt You really don't want to make it client side, for a vast number of reasons. 1) Client side is far too easy to fake. 2) The only way to store data in a widest range of browsers is by using cookies.[1] 3) Client side scripting may be disabled, in which case your cart is totally useless. 4) Client side, with out some form of server side support, can't email when the order is complete and ready to be processed. [1] Yes, I know that newer browsers do have all sorts of nifty way to store data locally, but I don't feel this has reached a usable level of penetration yet.
From: Thomas 'PointedEars' Lahn on 27 Apr 2010 11:50 Jeremy J Starcher wrote: > Thomas 'PointedEars' Lahn wrote: >> Further, alt.cljs does not exist (your newsgroups list is very much out >> of date) and this has nothing to do with the Mozilla JavaScript Engine. > > alt.comp.lang.javascript doesn't exist? Really? It does not exist on well-maintained NetNews servers. > It does exist and gets a small amount of traffic, the non-spam stuff I > usually refer back to here. That traffic is only coming in as crossposts from the Google Groups *archive* and not well-maintained NetNews servers. HTH PointedEars -- realism: HTML 4.01 Strict evangelism: XHTML 1.0 Strict madness: XHTML 1.1 as application/xhtml+xml -- Bjoern Hoehrmann
From: Jeremy J Starcher on 27 Apr 2010 12:18 On Tue, 27 Apr 2010 17:50:15 +0200, Thomas 'PointedEars' Lahn wrote: > Jeremy J Starcher wrote: >> alt.comp.lang.javascript doesn't exist? Really? > > It does not exist on well-maintained NetNews servers. > > That traffic is only coming in as crossposts from the Google Groups > *archive* and not well-maintained NetNews servers. OK, I'll admit I don't have the best understanding of things, and I am at risk of going offtopic (but JS groups aught to be on topic in a JS group) This is the header from the message as received in alt.cljs: Path: s03-b19.iad!npeersf01.iad.highwinds-media.com!npeer03.iad.highwinds- media.com!news.highwinds-media.com!feed-me.highwinds-media.com! nx01.iad01.newshosting.com!newshosting.com!news2.euro.net!news.mixmin.net! aioe.org!not-for-mail From: transkawa <transkawa(a)yahoo.fr> Newsgroups: alt.comp.lang.javascript,comp.lang.javascript,mozilla.dev.tech.javascript Subject: writing a javascript client-side shopping cart Date: Mon, 26 Apr 2010 13:15:48 +0100 Organization: transkawa Lines: 11 Message-ID: <MPG.263ed51d3daad5a6989684(a)nntp.aioe.org> NNTP-Posting-Host: 4pmnk3bKxsvdAAdSORHJ4g.user.speranza.aioe.org Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Complaints-To: abuse(a)aioe.org X-Notice: Filtered by postfilter v. 0.8.2 User-Agent: MicroPlanet-Gravity/2.9.14 Xref: Hurricane-Charley alt.comp.lang.javascript:2733 comp.lang.javascript:209884 X-Received-Date: Mon, 26 Apr 2010 05:17:03 MST (s03-b19.iad) Now, looking at the Message-ID, it seems to have originated from an NNTP server. Wouldn't messages coming in from a google-groups cross post have a different Message-ID number? Or a hint /somewhere/ that that message was crossposted by google?
From: Thomas 'PointedEars' Lahn on 27 Apr 2010 13:10 Jeremy J Starcher wrote: > Thomas 'PointedEars' Lahn wrote: >> Jeremy J Starcher wrote: >>> alt.comp.lang.javascript doesn't exist? Really? >> It does not exist on well-maintained NetNews servers. >> >> That traffic is only coming in as crossposts from the Google Groups >> *archive* and not well-maintained NetNews servers. > > [...] > This is the header from the message as received in alt.cljs: > [...] > Path: s03-b19.iad!npeersf01.iad.highwinds-media.com!npeer03.iad.highwinds- > media.com!news.highwinds-media.com!feed-me.highwinds-media.com! > nx01.iad01.newshosting.com!newshosting.com!news2.euro.net!news.mixmin.net! > aioe.org!not-for-mail > [....] > Newsgroups: > alt.comp.lang.javascript,comp.lang.javascript,mozilla.dev.tech.javascript > [...] > Message-ID: <MPG.263ed51d3daad5a6989684(a)nntp.aioe.org> > [...] > > Now, looking at the Message-ID, it seems to have originated from an NNTP > server. ISTM it must have originated from an NNTP server, or you could not read it. ("With the evolution of the Internet into mainstream use, the use of UUCP for the exchange of electronic mail has been significantly reduced. Today, UUCP is primarily used to link systems that are not on the Internet to a nearby system that is connected." [UUCP2K]) > Wouldn't messages coming in from a google-groups cross post have a > different Message-ID number? Not necessarily. As you can see in my messages, the Message-ID can be set by the client. And Google may synchronize with the NetNews server where the message was injected or with one of its peers. > Or a hint /somewhere/ that that message was crossposted by google? If the message was coming in from or via Google NetNews servers, you should see it in the Path header field. That is not the case here. But AISB, the list of servers still having alt.comp.lang.javascript includes not well-maintained NetNews servers, which includes nntp.aioe.org, from which that message originated (as you can see in the last component of the Path header field value). HTH PointedEars ___________ [UUCP2K] "Press Release concerning the Conclusion of the (UUCP) Mapping Project", 2000-06-12, <http://www.uucp.org/uumap/press-release.html> -- var bugRiddenCrashPronePieceOfJunk = ( navigator.userAgent.indexOf('MSIE 5') != -1 && navigator.userAgent.indexOf('Mac') != -1 ) // Plone, register_function.js:16
From: Dr J R Stockton on 28 Apr 2010 12:01
In comp.lang.javascript message <6697806.Z0PkbqXVLH(a)PointedEars.de>, Tue, 27 Apr 2010 16:27:54, Thomas 'PointedEars' Lahn <PointedEars(a)web.de> posted: >Further, alt.cljs does not exist (your newsgroups list is very much out of >date) and this has nothing to do with the Mozilla JavaScript Engine. Please >do not do such a mindless crosspost again. It is carried by AIOE, Demon/Highwinds, and Eternal-september, at least. That's all of the general servers that I use currently. Kindly consult a mental health specialist, or a craniotomist. -- (c) John Stockton, nr London UK. replyYYWW merlyn demon co uk Turnpike 6.05. Web <URL:http://www.uwasa.fi/~ts/http/tsfaq.html> -> Timo Salmi: Usenet Q&A. Web <URL:http://www.merlyn.demon.co.uk/news-use.htm> : about usage of News. No Encoding. Quotes precede replies. Snip well. Write clearly. Mail no News. |