change input value based on selection tag 1

[ttuser4]

I want to change input value based on selection but my code doesn't work. Can you please help me to fix it?

<script type="text/javascript" defer="defer">
...
Function Rafter() {
var dropdownIndex = document.getElementById('tb').selectedIndex;
var dropdownValue = document.getElementById('tb').[dropdownIndex].value;
var changer = document.getElementbyId('rafter');

if dropdownValue = "yes" {
changer.value = "Structural";

else {
changer.value = "Non-structural";
}
}
}
</script>
html
...
<tr>
<td><b>8. Thermally broken:</b> </td>
<td> <select size="1" name="tb" id="tb" onclick="Rafter();">
<option selected value="yes"> Yes </option>
<option value="no"> No </option>
</select>
</td>
<td>Select thermally broken or non-thermally broken.</td>
</tr>
<tr>
<td><b>9. Rafter:</b> </td>
<td> <input type="text" name="rafter" id="rafter" size="15" value="Structural" READONLY/></td>
<td>Structural or non-structural rafter.</td>
</tr>
...

 

[ggriffit]

try replacing :

if dropdownValue = "yes"

with :

if (dropdownValue == "yes")

Greg Griffiths
Livelink Certified Developer & ECM Global Star Champion 2005 & 2006

http://www.greggriffiths.org/livelink/

 

[vacunita]

Many things wrong with that code try this:

<script type="text/javascript" defer="defer">
function Rafter(){
var dropdownValue = document.getElementById('tb').value;
var changer = document.getElementById('rafter');

      if  (dropdownValue == "yes")    {
         changer.value = "Structural";
}

      else {
         changer.value = "Non-structural";
         }
      
}
</script>

and change the even in your drop down form OnClick to onChange so that it fires when the value changes, not merely when you click on the drop down.


----------------------------------
Phil AKA Vacunita
----------------------------------
Ignorance is not necessarily Bliss, case in point:
Unknown has caused an Unknown Error on Unknown and must be shutdown to prevent damage to Unknown.

 

[ttuser4]

Thank you!