Greyed dropdown based on radio button selection

olojtd4 · 02-19-2012, 01:13 AM

form is .asp
scenario:

I have 3 radio buttons above number of boxes (dropdown). I want the dropdown selection box greyed out on selecting Electronic (radio button)

Physical (radio button)
Image (radio button)
Electronic (radio button)

Number of Boxes [dropdown box]

Thanks for your help
I am new to coding.

jmrker · 02-19-2012, 04:17 AM

Doesn't really need any javascript ...

Code:

<html>
<head>
<title> Untitled </title>
</head>
<body>
<label><input type="radio" name="RBtn" onclick="document.getElementById('SBox').disabled=false" checked>
 Physical </label>
<label><input type="radio" name="RBtn" onclick="document.getElementById('SBox').disabled=false">
 Image </label>
<label><input type="radio" name="RBtn" onclick="document.getElementById('SBox').disabled=true">
 Electronic </label>
<br>
<select id="SBox">
 <option value="">Select</option>
 <option value="1"> 1 </option>
 <option value="2"> 2 </option>
 <option value="3"> 3 </option>
 <option value="4"> 4 </option>
</select>
</body>
</html>