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TOPIC: Javascript to conditionally disable ticket

Javascript to conditionally disable ticket 9 years 9 months ago #32211

Hi,

I've got a form where people can register for an event. They can choose their profession from the "Beroep"-dropdownlist, there you can choose several items.

Here's the dropdownlist:
|Selecteer a.u.b.[c]
Anesthesioloog
Cardioloog
Chirurg
Dermatoloog
Geriater
Gynaecoloog
Internist
Jeugdarts
Kaakchirurg
Kinderarts
KNO-arts
Longarts
MDL-arts
Neuroloog
Neurochirurg
Oogarts
Psychiater
Radioloog
Specialist overig
Bedrijfsarts
Huisarts
Verzekeringsarts
Apotheker
Apotheker (i.o.) <- item 24
Ziekenhuisapotheker
Ziekenhuisapotheker (i.o.) <- item 26
Tandarts
Fysiotherapeut
Gezondheidswetenschapper
Gezondheidszorgpsycholoog
Psychotherapeut
Verloskundige
Verpleegkundige
AIOS <- item 34
ANIOS 
Arts-Onderzoeker <- item 36
Onderzoeker in Opleiding
Gepensioneerd <-item 38
Student <- item 39

I've added this to the attributes of that dropdownlist:
onchange="myTicketFunction();"


And this to the javascript part:
<script type="text/javascript">
function myTicketFunction()
{
    if(document.getElementById('Beroep')[24].value = true) 
        document.getElementById('RSEProTickets')[0].disabled = true;
    } else if(document.getElementById('Beroep')[26].value = true) {
        document.getElementById('RSEProTickets')[0].disabled = true;
    } else if(document.getElementById('Beroep')[34].value = true) {
        document.getElementById('RSEProTickets')[0].disabled = true;
    } else if(document.getElementById('Beroep')[37].value = true) {
        document.getElementById('RSEProTickets')[0].disabled = true;
    } else if(document.getElementById('Beroep')[38].value = true) {
        document.getElementById('RSEProTickets')[0].disabled = true;
    } else if(document.getElementById('Beroep')[39].value = true) {
        document.getElementById('RSEProTickets')[0].disabled = true;
    } else {
        document.getElementById('RSEProTickets')[1].disabled = true;
}
</script>
window.onload = function() {
    myTicketFunction();
};

But that's not completely working. What am I missing here? Can anyone point me to the right direction? The form is here: www.surinamedag.com/symposium/index.php/...n/1-surinamedag-2015

Thanks a lot and best!

Sander
Last Edit: 9 years 9 months ago by swvanderlaan.
The administrator has disabled public write access.
  • 1

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