Re: How to implement a dropdownlist in CherryPy where selected item is returned as argument appended to current URL?

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Jibun no Kage wrote:
>
> As I am sure many have gathered, I am working under some unique=20
> requirements.=C2=A0 Straight HTML would be without use of any optional=20
> scripting language, i.e. that will likely be disabled.=C2=A0 Java script =
as=20
> one example is restricted and even prohibited in some secured=20
> environments.=C2=A0 In secured micro-controller environments for example,=
=20
> there are quite a number of limits and restrictions unique to the=20
> environment at hand.=C2=A0 This is also typical of Internet-of-Things=20
> implementations for example.

IoT devices run a web SERVER, not a web BROWSER.=C2=A0 A web browser is a U=
I=20
concept, and IoT devices don't have a UI.=C2=A0 Javascript runs in the web=
=20
browser, not on the server.


> So assumption that Java is available, i.e. enabled is not a given. ...=20

JavaSCRIPT.=C2=A0 Please, those two are very, very, very different language=
s=20
used for very different purposes.=C2=A0 The world was done a huge misservic=
e=20
when Netscape decided to rename ECMAScript to Javascript in order to=20
cash in on the "cool word of the day".=C2=A0 You MUST get your terminology=
=20
straight, because I think that's were some of your confusion arises.=C2=A0=
=20
Your IoT device can send Javascript code in the HTML pages it sends out,=20
knowing that it will be read and executed by a competent web browser on=20
a user's laptop somewhere.


> Moreover, the design goals I am working with is to not use additional=20
> scripting support, and Java is explicitly prohibited.

Java or Javascript?=C2=A0 There was a time that Java was proposed as a=20
browser-extension language, just like Microsoft's ActiveX controls.=C2=A0=
=20
That time is gone.=C2=A0 I can believe that Java is prohibited.=C2=A0 Howev=
er,=20
Javascript support is ubiquitous.=C2=A0 EVERY non-toy browser has it, and i=
t=20
is secure.=C2=A0 I do not believe any serious web-based project today would=
=20
prohibit Javascript.=C2=A0 It doesn't make sense.


> This of course limits the flexibility of the design significantly.=20

Yes.=C2=A0 For example, you cannot implement an "automatic" dropdown list=
=20
without Javascript.=C2=A0 It is impossible.=C2=A0 Forms can only be submitt=
ing by=20
having the user click a "submit" button.


> I am trying a few things using the change of focus and hover events,=20
> time to get creative.

Change of focus and hover events execute Javascript code.=C2=A0=C2=A0 If yo=
u are=20
allowed to handle events, then you are allowed to use Javascript.

--=20
Tim Roberts, [email protected]
Providenza & Boekelheide, Inc.


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