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  #1 (permalink)  
Old February 16th, 2007, 06:35 AM
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Default problems with JavaScript Code


i am having problems making this work...
 please help..


 
Code:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
Code:
<html xmlns="http://www.w3.org/1999/xhtml">
<head>



<script language="JavaScript"><!--
function VerifyData() {
    for (var i=0;i<2;i++) {
        if (document.testa[i].checked)
            return true;
    }
    alert('You must chose a template for section testa');
    return false;

    for (var i=0;i<2;i++) {
        if (document.testb[i].checked)
            return true;
    }
    alert('You must chose a template for section testb');
    return false;
}


//-->




</script>




</head>
<body>
 
<form name="Template" method="post" action="next.asp"  onSubmit="return VerifyData();">


         a<input type="radio" name="testa" id="testa" value="1" /> 


         b<input type="radio" name="testa" id="testa" value="3" /> 

<br />

            c<input type="radio" name="testb" id="testb" value="1" /> 


         d<input type="radio" name="testb" id="testb" value="3" /> 
<br />

        <input type="submit" value="go" />

         </form>

</body>
</html>
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Old February 16th, 2007, 07:00 AM
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Default

There are two obvious mistakes. Firstly you can't access radio groups by index. You need to use getElementsByName('testa') to get a collection of the relevant group and then loop through this collection as you have done:
Code:
var colGroup = getElementsByName('testa');
for (var i = 0; i < colGroup.length; i++)
{
  if (colGroup.checked) return true;
}
The second error is that your function will always return after testing the first group. You need to change it so that it returns false if it fails but if it succeeds then does the second check against the other group.

--

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Old February 16th, 2007, 07:20 AM
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Hi,

I have tried to use your code to get it to work..

but now i get the error message whether one radio is selected or not..

Code:
<script language="JavaScript"><!--
function VerifyData() {




var colGroup = document.getElementsByName('testa');
for (var i = 0; i < colGroup.length; i++) {
  if (colGroup.checked) 
  return true;
  }
  alert('You must chose a template for section 1');
    return false;
}


//-->




</script>
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Old February 16th, 2007, 07:26 AM
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Ok this works for one..


<script language="JavaScript"><!--
function VerifyData() {




var colGroup = document.getElementsByName('testa');
for (var i = 0; i < colGroup.length; i++) {
  if (colGroup[i].checked)
  return true;
  }
  alert('You must chose a template for section 1');
    return false;
}


//-->




</script>

so how then would i make it work for 2..

when i cant do this..

<script language="JavaScript"><!--
function VerifyData() {




var colGroup = document.getElementsByName('testa');
for (var i = 0; i < colGroup.length; i++) {
  if (colGroup[i].checked)
  return true;
  }
  alert('You must chose a template for section 1');
    return false;


    var colGroup2 = document.getElementsByName('testb');
for (var a = 0; a < colGroup2.length; a++) {
  if (colGroup2[a].checked)
  return true;
  }
  alert('You must chose a template for section 2');
    return false;


}


//-->




</script>

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Old February 16th, 2007, 08:57 AM
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Sorry missed the [i] bit.

--

Joe (Microsoft MVP - XML)
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Old March 6th, 2007, 04:44 PM
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Why did you type this?

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

What is it for?
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