Validating dropdowns and radio buttons

Hello Experts

For text fields, this works well:
if(frm.txtCompany.value == '')
{
alert('The Company field is mandatory');
return false;
}

However,. I tried the following for a dropdown, where *** Please Select *** is not a valid selection, but nothing happens:
if(frm.cboModule.value == '*** Please Select ***')
{
alert('The Module field is mandatory');
return false;
}

As well, I also need to validate if a radio button is selected within a group, I can't imagine the code for tha.

Please help

Instant Access to this Solution

Plus...

30 Day FREE access, no risk, no obligation

Collaborate with the world's top tech experts

Unlimited access to our exclusive solution database

Never be left without tech help again

Trusted by hundreds of thousands everyday for fast, accurate and reliable tech support.

"The time we save is the biggest benefit of Experts Exchange to Warner Bros. What could take multiple guys 2 hours or more each to find is accessed in around 15 minutes on Experts Exchange." Mike Kapnisakis, Warner Bros.

"Our team likes having a resource that is more secure than just using Google and most experts using this service really know their stuff. It's nice to look here first versus using Google." Dayna Sellner, Lockheed Martin

"Anytime that I've been stumped with a problem, 9 out of 10 times Experts Exchange has either the accepted solution or an open discussion of the potential solution to the problem." Kenny Red, eBay Inc.

See what Experts Exchange can do for you.

Got a question?

We've got the answer.

Experts Exchange has been collecting answers to technology questions since 1996…3 million and counting! If you have a question, chances are we already have your answer.

Screenshot of Experts Exchange Knowledgebase

Need individual assistance?

Our experts are ready to help.

If you can't find the exact answer you're looking for, ask our exclusive community of 50,000 experts. You’ll get a personalized answer from a trusted professional.

Want to learn from the best?

Read articles from industry experts.

Thousands of free tech tips, tricks, how-to’s and tutorials are available in our peer reviewed articles section. See for yourself how smart our experts are, no login required.

Working on a long term project?

Store your work and research.

Save solutions to your questions, answers you’ve discovered through searching plus helpful articles in your personal knowledgebase for easy future access.

Join the Community

Give a Little. Get a Lot.

Join the community of experts here and help other tech pros by answering question in your area of expertise. You can earn FREE access to all Experts Exchange's premium features and resources.

I have replied in the previous post , I will post the same piece of information here also

<html>
<head>
<script type="text/javascript">
        function validate(frm)
        {
                if(frm.txtCompany.value == '') 
                {
                                alert('Company field cannot be blank');
                                return false;
                }
				/*
					Notice that the in the drop down, the options have a attribute called value.
					This will work only if the value attribute is present(across all browsers).
					i.e if the drop downs are like this
					<select name="cboModule" id="cboModule">
						<option  selected>*** Please Select ***</option>
						<option >module1</option>
						<option >module2</option>
						<option >module3</option>
					</select>
					then the function below will look like
					if(frm.cboModule.options[frm.cboModule.options.selectedIndex].text == '*** Please Select ***') 
					{
						alert('Company field cannot be blank');
						return false;
					}
				*/
				if(frm.cboModule.value == '*** Please Select ***') 
                {
					alert('Module field cannot be blank');
					return false;
                }
				// validate the radio buttons
				var rads  = document.getElementsByName('grp');
				var isRadChecked = false;
				for(var i=0;i<rads.length;i++)
				{
					if(rads[i].checked)
					{
						isRadChecked = true;
						break;
					}					
				}
				if(!isRadChecked)
				{
					alert('Please select an option');
					return false;
				}
                return true;
        }
</script>
</head>
<body> 
	<form name="frm" method="POST" action="thank-you.asp">
			Company: <input type="text" name="txtCompany">
			<input type="submit" name="submit" value="submit" onclick="return validate(document.frm);">
			<br>
			Module: <select name="cboModule" id="cboModule">
						<option value="*** Please Select ***" selected>*** Please Select ***</option>
						<option value="module1">module1</option>
						<option value="module2">module2</option>
						<option value="module3">module3</option>
					</select>
					<br>
			select option: <input type="radio"	id="rad1" name="grp">1
							<input type="radio"	id="rad2" name="grp">2
							<input type="radio"	id="rad3" name="grp">3
							<input type="radio"	id="rad4" name="grp">4			
	</form>
</body>
</html>

1:
2:
3:
4:
5:
6:
7:
8:
9:
10:
11:
12:
13:
14:
15:
16:
17:
18:
19:
20:
21:
22:
23:
24:
25:
26:
27:
28:
29:
30:
31:
32:
33:
34:
35:
36:
37:
38:
39:
40:
41:
42:
43:
44:
45:
46:
47:
48:
49:
50:
51:
52:
53:
54:
55:
56:
57:
58:
59:
60:
61:
62:
63:
64:
65:
66:
67:
68:
69:
70:
71:

Select all Open in new window

Question

Validating dropdowns and radio buttons

Subscribe now for full access to Experts Exchange and get

Instant Access to this Solution

Active Server Pages (ASP)

JavaScript

Hypertext Markup Language (HTML)

Trusted by hundreds of thousands everyday for fast, accurate and reliable tech support.

See what Experts Exchange can do for you.

Got a question?

We've got the answer.

Need individual assistance?

Our experts are ready to help.

Want to learn from the best?

Read articles from industry experts.

Working on a long term project?

Store your work and research.

What Makes Experts Exchange Unique?

Trusted by the world's most respected brands.

Faithfully serving IT professionals since 1996.

Related Solutions

Free Tech Articles

Cloud Class Webinars

Join the Community

Give a Little. Get a Lot.

Answers

3 Ways to Join

The Experts

The Experts

Testimonials

Testimonials

Testimonials

Business Clients

Business Clients

In the Press

In the Press

In the Press