Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.javascript > #22259

Re: managing buttons

Show all headers | View raw

Norman Peelman wrote:

> On 12/08/2013 05:54 AM, Une Bévue wrote:
>> on my page i have 10 buttons
>>
>> 5 for categories :
>> "+", "-", "E", "S", "C" for Add, Remove, Edit, Save and Cancel
>>
>> the same buttons for items.
>>
>> I'm looking for clever idaes on how to manage those buttons.
>>
>> I know how to enbale/disable the buttons but i'm confused on how to have
>> a clean and clever way to manage them versus the state of my JS.
>>
>> For example when I'm editing a category or an item, after having click
>> on "E", i want to disable "+", "-" and "E", letting "S" and "C" enabled.
>>
>> Also my "S" button serves two purposes : saving an updated category/item
>> or saving a modifies category/item
>>
>> Any help appreciated.
> 
>    So create functions that will enable and disable a passed array of
> objects (control names)

Control names are _not_ objects, they are primitive String values (DOMString 
per DOM interface).

> such as:
> 
> 
> function ButtonsDisable(buttons)

It is customary in these languages that only names of functions that can be 
called as a constructor, and constant-like variables or (in some 
implementations) constants, start with a capital letter.  (Constant-like 
variables and constants are then distinguished from functions that can be 
called as a constructor by the former's all-uppercase names.)

> {
>    foreach (buttons as button)

There is no “foreach” statement in any widely known ECMAScript 
implementation (there was “for each” in E4X, for which support unfortunately 
has been abandoned by Mozilla recently).  A possibility would be a for…in 
statement, but a C-style “for” statement is more reliable here.

>    {
>      obj = document.getElementByID(button)

There is no document.getElementByID() method provided by any DOM 
implementation.  The property name is “getElementById”.  Property names 
usually are case-sensitive in these languages and their applications.

>      obj.disabled = true
>    }
> }
> 
> function ButtonsEnable(buttons)
> {
>    foreach (buttons as button)
>    {
>      obj = document.getElementByID(button)
>      obj.disabled = false
>    }
> }
> 
> So that up entering the code for *Edit*ing you would call the functions
> like:
> 
> ButtonsDisable(array("+","-","E"))

There is no array() function in ECMAScript.  There is an Array() 
constructor/factory that can be safely replaced with “[”…“]”, the Array 
Initialiser.

> ButtonsEnable(array("S","C"))
> 
> 
>    Off the cuff code, may need tweaking

It is rather *pseudo-code* that needs *translation* into a programming 
language.  Apparently you are confusing ECMAScript with some other language, 
maybe with PHP (which you are equally challenged with, as your comp.lang.php 
record shows).

>    but that's the general idea. So
> I'm guessing that if 'categories' or 'items' is empty you would:
> 
> ButtonsDisable(array("-","E","S","C"))
> ButtonsEnable(array("+"))

OMG.  Will you *please* stop posting suggestions until you have gotten a 
*minimum* clue?

-- 
PointedEars

Twitter: @PointedEars2
Please do not Cc: me. / Bitte keine Kopien per E-Mail.

Back to comp.lang.javascript | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

managing buttons Une Bévue <unbewusst.sein@fai.invalid> - 2013-12-08 11:54 +0100
  Re: managing buttons Norman Peelman <npeelman@cfl.rr.com> - 2013-12-08 08:10 -0500
    Re: managing buttons Une Bévue <unbewusst.sein@fai.invalid> - 2013-12-08 15:03 +0100
    Re: managing buttons "Evertjan." <exjxw.hannivoort@interxnl.net> - 2013-12-08 16:34 +0000
      Re: managing buttons Denis McMahon <denismfmcmahon@gmail.com> - 2013-12-08 20:12 +0000
      Re: managing buttons Norman Peelman <npeelman@cfl.rr.com> - 2013-12-08 17:59 -0500
        Re: managing buttons Une Bévue <unbewusst.sein@fai.invalid> - 2013-12-09 07:02 +0100
      Re: managing buttons Une Bévue <unbewusst.sein@fai.invalid> - 2013-12-09 06:24 +0100
        Re: managing buttons "Evertjan." <exjxw.hannivoort@interxnl.net> - 2013-12-09 20:34 +0000
          Re: managing buttons Norman Peelman <npeelman@cfl.rr.com> - 2013-12-09 23:05 -0500
            Re: managing buttons "Evertjan." <exjxw.hannivoort@interxnl.net> - 2013-12-10 08:55 +0000
              Re: managing buttons Norman Peelman <npeelman@cfl.rr.com> - 2013-12-10 07:07 -0500
    Re: managing buttons Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-12-08 19:35 +0100
      Re: managing buttons Une Bévue <unbewusst.sein@fai.invalid> - 2013-12-09 06:26 +0100

csiph-web