topical media & game development
[] readme course(s) preface I 1 2 II 3 4 III 5 6 7 IV 8 9 10 V 11 12 afterthought(s) appendix reference(s) example(s) resource(s) _

talk show tell print

basic-web-html-12-ch12-eg07.htm / htm



  <html>
  <head>
    <title>Form validation</title>
    <script type="text/JavaScript" language="JavaScript">
  
  function validate(form) {
    var radioButtons = form.radSuit;
    radioChosen = false;
    for (var i=0; i<radioButtons.length; i++) {
     if (radioButtons[i].checked)
      {
        radioChosen=true;
        returnValue = true;
      }
  }
  
  if (radioChosen == false) {
  returnValue = false;
  alert("You did not select a suit of cards");
  }
  
  return returnValue;
  }
  
  </script>
  </head>
  <body>
  
  <form name="frmCards" action="cards.aspx" method="post"
           onsubmit="return validate(this)" >
    <p>Please select a suit of cards.</p>
    <p><input type="radio" name="radSuit" value="hearts" /> Hearts </p>
    <p><input type="radio" name="radSuit" value="diamonds" /> Diamonds </p>
    <p><input type="radio" name="radSuit" value="spades" /> Spades </p>
    <p><input type="radio" name="radSuit" value="clubs" /> Clubs </p>
    <p><input type="submit" value="Submit choice" /></p>
  </form> 
  
  </body>
  </html>
[] readme course(s) preface I 1 2 II 3 4 III 5 6 7 IV 8 9 10 V 11 12 afterthought(s) appendix reference(s) example(s) resource(s) _

(C) Æliens 20/2/2008

You may not copy or print any of this material without explicit permission of the author or the publisher. In case of other copyright issues, contact the author.