Populate textbox based on dropdown selection?

[xuanb]

I have a simple registration form with a dropdown menu for courses (eg. 101 Javascript, 202 ASP). I want to automatically write the course date and tuition to a textbox. I have a hunch that I wanna use a switch statement and that i have to pass the option value as a parameter but I'm stuck at the *dirty details*. Here's what I have sofar.

function getTuitionDate(){
if (document.RegFrm.SelectCourse.options[document.RegFrm.SelectCourse.selectedIndex].value != "&quot {
Switch (course) {
case 101: document.RegFrm.CourseDate.value = "Jan. 1, 1111";
document.RegFrm.Tuition.value = "$1111"; break;

case 102: document.RegFrm.CourseDate.value = "Dec. 9, 9999;
document.RegFrm.Tuition.value = "$9999"; break;
}
}
}

<form action=&quot;formmail.asp&quot; method=&quot;post&quot; name=&quot;RegFrm&quot;>

<select onchange=&quot;getTuitionDate()&quot; id=&quot;SelectCourse&quot; name=&quot;SelectCourse&quot; tabindex=&quot;9&quot;>
<option selected value=&quot;&quot;>Select Course
<option value=&quot;101&quot;>101 Javascript
<option value=&quot;102&quot;>102 ASP
</select>
...
Date: <input name=&quot;CourseDate&quot; type=&quot;text&quot; id=&quot;CourseDate&quot; size=&quot;20&quot; readonly=&quot;true>
Tuition: <input name=&quot;Tuiton&quot; type=&quot;text&quot; id=&quot;Tuition&quot; size=&quot;12&quot; readonly=&quot;true&quot;>

Despite the holiday, anyone out there to help??

 

[adam0101]

You could put the dates into an associative array with the course number being the key:

courses=[];
courses[&quot;101&quot;]=[&quot;Jan. 1, 1111&quot;,&quot;$1111&quot;];
courses[&quot;102&quot;]=[&quot;Dec. 9, 9999&quot;,&quot;$9999&quot;];

Then make your getTuitionDate() function look like this:

function getTuitionDate(){
var f=document.RegFrm;
if(f.SelectCourse.selectedIndex>0){
f.CourseDate.value = courses[f.SelectCourse[f.SelectCourse.selectedIndex].value][0];
f.Tuition.value = courses[f.SelectCourse[f.SelectCourse.selectedIndex].value][1];
}
}

Adam

 

[xuanb]

Yuhuuu! Working like a charm...Thanks a lot Adam and have a great holiday!
Xuan