select box result to show/hide another select box. jquery

[pihrig]

ok this is kinda like a 2 select related, but not really..
i want to show a 2nd selecty box only if the first select box is value 6
This works great on change when you are in the form.

but if i am updating the form. it doesn't see the default value..
which is in a var called StrType
prt_type is the first select prt_prog_1 is the div id surrounding 2nd select

<script>
        $(function(){
                $("#prt_type").change(function () {
                        var val = $(this).val();
                        switch(parseInt(val)){
                        case 6:
                                $("#prt_prog_1").show();
                                break;
                        case 1: case 2: case 3: case 4: case 5: case 7: case 8:  case '':
                                $("#prt_prog_1").hide();
                                break;
                        }
                });
        });
</script>

i tried just doing a <cfif StrType EQ 6 > to surround the stuff that does work..
but i cant then ge t the change of states...

<!--- <cfif StrType EQ 6> --->
      <div id="prt_prog_1">
      <select name="prt_prog" id="prt_prog">
        <option value="0">Select</option>
        <option value="1" <cfif StrProg EQ 1> selected</cfif>>Elite</option>
        <option value="2" <cfif StrProg EQ 2> selected</cfif>>Preferred</option>
        <option value="3" <cfif StrProg EQ 3>
selected</cfif>>Authorized</option>
      </select>
        </div>
        <!--- </cfif> --->

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[pihrig]

so just to clarify.
the show hide js works fine on its own, just doesn't check or see the
default value from the existing data

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[Dan G. Switzer, II]

Paul,

You need to "trigger" the change method when you initialize your code:

On Thu, Nov 12, 2009 at 11:07 AM, Paul Ihrig <pihrig@...> wrote:

>
> <script>
>        $(function(){
>                $("#prt_type").change(function () {
>                        var val = $(this).val();
>                        switch(parseInt(val)){
>                        case 6:
>                                $("#prt_prog_1").show();
>                                break;
>                        case 1: case 2: case 3: case 4: case 5: case 7: case
> 8:  case '':
>                                $("#prt_prog_1").hide();
>                                break;
>                        }
>                });
>        });
> </script>
>
>

Change the above code to:

<script>
       $(function(){
               $("#prt_type").change(function () {
                       var val = $(this).val();
                       switch(parseInt(val)){
                       case 6:
                               $("#prt_prog_1").show();
                               break;
                       case 1: case 2: case 3: case 4: case 5: case 7: case
8:  case '':
                               $("#prt_prog_1").hide();
                               break;
                       }
               }).trigger("change");
       });
</script>

That will force jQuery to fire the change event handler, just as if the
browser actually fired the event.

-Dan


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[Dan G. Switzer, II]

On Thu, Nov 12, 2009 at 11:08 AM, Paul Ihrig <pihrig@...> wrote:

>
> so just to clarify.
> the show hide js works fine on its own, just doesn't check or see the
> default value from the existing data
>
>

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[pihrig]

Dan.
Thank You.

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[pihrig]

btw.
how other then this list could i have found the answer?
i tried google = fail

On Thu, Nov 12, 2009 at 1:30 PM, Paul Ihrig <pihrig@...> wrote:
> Dan.
> Thank You.
>

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