Solved

Radio Buttons

Posted on 2004-04-19
6
429 Views
Last Modified: 2006-11-17
Ok, im trying to validate radio buttons, there are two questions, both need to be answers. At the moment the submit button is button type, if i change it to submit the form is submitted even if the alert boxes apear. i have the following:

<script language="JavaScript">
function Validate(frm, btnName)
{
      var btn = frm[btnName]
      var valid
      
      for (var x = 0;x < btn.length; x++)
      {
            valid = btn[x].checked
            if (valid) {break}
      }
      if(!valid)
      {
            alert("Please select an answer.")
      }
      
      var btn = frm.question2
      for (var x = 0;x < btn.length; x++)
      {
            valid = btn[x].checked
            if (valid) {break}
      }
      if(!valid)
      {
            alert("Please select an answer.")
      }
}
</script>
<body>
<form action="confirm.htm">
      <input type="radio" name="question1" id="1b1" value="1">Always</input>
      <input type="radio" name="question1" id="1b2" value="2">Often</input>
      <input type="radio" name="question1" id="1b3" value="3">Sometimes</input>
      <input type="radio" name="question1" id="1b4" value="4">Rarely</input>
      <input type="radio" name="question1" id="1b5" value="5">Never</input>

      <div>
      <input type="radio" name="question2" id="11b1" value="1">Always</input>
      <input type="radio" name="question2" id="11b2" value="2">Often</input>
      <input type="radio" name="question2" id="1b3" value="3">Sometimes</input>
      <input type="radio" name="question2" id="11b4" value="4">Rarely</input>
      <input type="radio" name="question2" id="11b5" value="5">Never</input>
      
            <input type="button" value="Submit Answer" onClick="Validate(this.form, 'question1')"/>
      </div>
</form>
0
Comment
Question by:mattdye
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6 Comments
 
LVL 36

Expert Comment

by:Zyloch
ID: 10857547
This might be a way to solve this. First, instead of onClick, do onSubmit.

Make it onSubmit="return Validate(this.form, 'question1')"/>

Then, whenever you need an alert, below the alert, put this line:

return false;

--Zyloch
0
 

Author Comment

by:mattdye
ID: 10857683
ok, it now looks like this and it doesnt validate anything


<script language="JavaScript">
function Validate(frm, btnName)
{
      var btn = frm[btnName]
      var valid
      
      for (var x = 0;x < btn.length; x++)
      {
            valid = btn[x].checked
            if (valid) {break}
      }
      if(!valid)
      {
            alert("Please select an answer.")
            return false;
      }
      
      var btn = frm.question2
      for (var x = 0;x < btn.length; x++)
      {
            valid = btn[x].checked
            if (valid) {break}
      }
      if(!valid)
      {
            alert("Please select an answer.")
            return false;
      }
      
}
</script>
<body>
<form action="confirm.htm">
      <input type="radio" name="question1" id="1b1" value="1">Always</input>
      <input type="radio" name="question1" id="1b2" value="2">Often</input>
      <input type="radio" name="question1" id="1b3" value="3">Sometimes</input>
      <input type="radio" name="question1" id="1b4" value="4">Rarely</input>
      <input type="radio" name="question1" id="1b5" value="5">Never</input>

      <div>
      <input type="radio" name="question2" id="11b1" value="1">Always</input>
      <input type="radio" name="question2" id="11b2" value="2">Often</input>
      <input type="radio" name="question2" id="1b3" value="3">Sometimes</input>
      <input type="radio" name="question2" id="11b4" value="4">Rarely</input>
      <input type="radio" name="question2" id="11b5" value="5">Never</input>
      
            <input type="submit" value="Submit Answer" onSubmit="return Validate(this.form, 'question1')"/>
0
 
LVL 36

Expert Comment

by:Zyloch
ID: 10857715
Let me check.
0
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LVL 36

Expert Comment

by:Zyloch
ID: 10857737
<script language="JavaScript">
function Validate(frm, btnName)
{
     var btn = frm[btnName]
     var valid
     
     for (var x = 0;x < btn.length; x++)
     {
          valid = btn[x].checked
          if (valid) {return true;}
     }
     if(!valid)
     {
          alert("Please select an answer.")
          return false;
     }
     
     var btn = frm.question2
     for (var x = 0;x < btn.length; x++)
     {
          valid = btn[x].checked
          if (valid) {return true;}
     }
     if(!valid)
     {
          alert("Please select an answer.")
          return false;
     }
     
}
</script>
<body>
<form  onSubmit="return Validate(this,'question1')" action="confirm.htm">
     <input type="radio" name="question1" id="1b1" value="1">Always</input>
     <input type="radio" name="question1" id="1b2" value="2">Often</input>
     <input type="radio" name="question1" id="1b3" value="3">Sometimes</input>
     <input type="radio" name="question1" id="1b4" value="4">Rarely</input>
     <input type="radio" name="question1" id="1b5" value="5">Never</input>

     <div>
     <input type="radio" name="question2" id="11b1" value="1">Always</input>
     <input type="radio" name="question2" id="11b2" value="2">Often</input>
     <input type="radio" name="question2" id="1b3" value="3">Sometimes</input>
     <input type="radio" name="question2" id="11b4" value="4">Rarely</input>
     <input type="radio" name="question2" id="11b5" value="5">Never</input>
     
          <input type="submit" value="Submit Answer"/>

Now it should work. The main problem was the onSubmit was in the wrong location AND you don't access the form by doing this.form. It's just this.

--Zyloch
0
 

Author Comment

by:mattdye
ID: 10861467
ok thats cool, but it doesnt validate the questio2 set, ps, thanks for the help
0
 
LVL 36

Accepted Solution

by:
Zyloch earned 70 total points
ID: 10862680
Oh! Sorry, I was at school. I think I know the problem. The script section should be:

<script language="JavaScript">
function Validate(frm, btnName)
{
     var btn = frm[btnName]
     var valid
     
     for (var x = 0;x < btn.length; x++)
     {
          valid = btn[x].checked
          if (valid) {break;}
     }
     if(!valid)
     {
          alert("Please select an answer.")
          return false;
     }
     
     var btn = frm.question2
     for (var x = 0;x < btn.length; x++)
     {
          valid = btn[x].checked
          if (valid) {return true;}
     }
     if(!valid)
     {
          alert("Please select an answer.")
          return false;
     }
     
}
</script>

This is because the first return true; in the previous script exited the function. I tested this and it works fine.

--Zyloch
0

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