multiple checkbox

Dear EE,
I have 4 checkbox category
1. All Check
2. 20s age check
3. 30s age check
4. 40s age check
Inside <form> i have multiple checkboxes which I have distinguished by Id2,Id3 so on for 20s,30s respectively.

how can I checked 1. for all, 2. for 20s, 3. for 30s etc.

any sample code would be very much appreciated
Thankk you
LVL 2
salojAsked:
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ProculopsisConnect With a Mentor Commented:

Do you mean something like this:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html>
<head>
<title>http://www.experts-exchange.com/Programming/Languages/Scripting/JavaScript/Q_26895677.html</title>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.4/jquery.min.js" type="text/javascript"></script>
<script type="text/javascript">

jQuery(document).ready( function() {

  $("input[id^=range-]").click( function() {
    var checked = $(this).get(0).checked;
    var selector = "input[class^=" + $(this).attr( "id" ) + "]"
    $(selector).each( function() {
      $(this).get(0).checked = checked;
    });
  });

});

</script>
</head>
<body>

Toggle All: <input id="range-" type="checkbox" />
Toggle 20s: <input id="range-20" class="range-" type="checkbox" />
Toggle 30s: <input id="range-30" class="range-" type="checkbox" />
Toggle 40s: <input id="range-40" class="range-" type="checkbox" />

<table id="my-table" border="1">
<tr><td> 20: <input class="range-20" type="checkbox" /> 30: <input class="range-30" type="checkbox" /> 40: <input class="range-40" type="checkbox" /> </td></tr>
<tr><td> 20: <input class="range-20" type="checkbox" /> 30: <input class="range-30" type="checkbox" /> 40: <input class="range-40" type="checkbox" /> </td></tr>
<tr><td> 20: <input class="range-20" type="checkbox" /> 30: <input class="range-30" type="checkbox" /> 40: <input class="range-40" type="checkbox" /> </td></tr>
<tr><td> 20: <input class="range-20" type="checkbox" /> 30: <input class="range-30" type="checkbox" /> 40: <input class="range-40" type="checkbox" /> </td></tr>
<tr><td> 20: <input class="range-20" type="checkbox" /> 30: <input class="range-30" type="checkbox" /> 40: <input class="range-40" type="checkbox" /> </td></tr>
</table>

</body>
</html>

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Manikandan1986Commented:
Please try this

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

<head>
      <meta http-equiv="content-type" content="text/html; charset=iso-8859-1" />
      <meta name="author" content="user_" />

      <title>Untitled 1</title>
      <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js"></script>
            <script type="text/javascript">
                  $(document).ready(function() {
                             
                              $("#all").click(
                                    function() {  
                                           var status = $(this).attr("checked");
                                           $('.all').each(function(index) {
                                                                     $(this).attr("checked", status);
                                                              });

                                         
                                     }
                              );
                             
                              $('.all').click(
                                    function() {  
                                    var status = true;
                                    $('.all').each(function(index) {
                                                                     if(status)
                                                                     {
                                                                           status = $(this).attr("checked");
                                                                     }
                                                       });
                                                       $("#all").attr("checked", status);
                                 }
                              );
                  });
            </script>
</head>

<body>

<input type="checkbox" name="all" id="all"/> All
<input type="checkbox" name="twenty" class="all"/>20s age
<input type="checkbox" name="thirty" class="all"/>30s age
<input type="checkbox" name="forty" class="all"/>40s age

</body>
</html>
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