please see what is wrong with my JS code

Hi,

The following code is giving me errors.
Can someone please advise what I am doing wrong?

<html>
<head><title>Id and Name Attributes</title>

<script type="text/javascript">

function validateAnswer() {

      if (document.form[0].["group1"].value="Philip")
                  {
            alert("Correct!");
            document.getElementById("Philip").checked;
            document.getElementById("text1").value="Philip";
                  }
      else
                  {
            alert("False!");
            document.getElementById("Philip").checked;
            document.getElementById("text1").value="Philip";
                  }
}
            


</script>


</head>


<body>

<form id="form1">

<input type="radio" name="group1" id="Philip" value="Philip" />Philip<br />
<input type="radio" name="group1" id="Joe" value="Joe" checked />Joe <br />
<input type="radio" name="group1" id="Alex" value="Alex" />Alex <br />
<input type="text" name="text1" id="text1" value="text to go here" />
<input type="button" name="button1" id="button1" value="submit" onClick="validateAnswer(this)" />



</form>

</body>
</html>

thanks
jecommeraAsked:
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Lalit ChandraCommented:
Unfortunately, Extracting the values of the Radio button is not so much straightforward.
See the url to more and precise help
http://www.webdevelopersnotes.com/tips/html/finding_the_value_of_a_radio_button.php3
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GwynforWebCommented:
Firstly its is

document.forms[0]  not document.form[0]

Secondly are trying to address a radio group as if it was a Select Box.

This might do the job for you though:-

<script type="text/javascript">

function validateAnswer() {
 if (document.getElementById("Philip").checked) alert('correct');
 else
 {
   alert("false")
   document.getElementById("Philip").checked=true
  }
}
 
</script>

<form id="form1">
  <p><input type="radio" name="group1" id="Philip" value="Philip" />Philip<br />
  <input type="radio" name="group1" id="Joe" value="Joe" checked />Joe <br />
  <input type="radio" name="group1" id="Alex" value="Alex" />Alex <br />
  <input type="text" name="text1" id="text1" value="text to go here" />  
  <input type="button"
  name="button1" id="button1" value="submit" onClick="validateAnswer(this)" /> </p>
</form>
0
ProculopsisCommented:
<!--

jQuery is your friend with a one-liner:

$("input[name=group1]:checked").val()

-->
<!DOCTYPE html>
<html>
<head>
  <meta http-equiv="content-type" content="text/html; charset=UTF-8">
  <title> - jsFiddle demo</title>
 
  <script type='text/javascript' src='http://code.jquery.com/jquery-1.7.1.js'></script>
 
<script type='text/javascript'>//<![CDATA[
$(function(){
$("#button1").click(validateAnswer);

function validateAnswer() {
    var answer = "Philip";
    $("#text1").val(answer)
    var message = "False!";
    if ($("input[name=group1]:checked").val() == answer) message = "Correct!";

    alert(message);
}
});//]]>  

</script>

</head>
<body>
  <form id="form1">
<input type="radio" name="group1" id="Philip" value="Philip" />Philip<br />
<input type="radio" name="group1" id="Joe" value="Joe" checked />Joe <br />
<input type="radio" name="group1" id="Alex" value="Alex" />Alex <br />
<input type="text" name="text1" id="text1" value="text to go here" />
<input type="button" name="button1" id="button1" value="submit" onClick="validateAnswer(this)" />
</form>
 
</body>
</html>
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