Multiple check box validation

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  • shanmugamit
    New Member
    • Feb 2008
    • 45
    #1

    Multiple check box validation

    hi,
    Code:
    var len=document.form.check.length
flag=false;
for(i=0;i<len;i++)
{
if(document.form.check[i].checked==true)
{
flag=true;
break;
}
}
if(flag==false)
{
alert(select atlest one)
}
    my error is object is required
    Tags: None
    • shanmugamit
      New Member
      • Feb 2008
      • 45
      #2
      Originally posted by shanmugamit
      hi,my error is object is required.please any one help for a problem.....
      Code:
      var len=document.form.check.length
flag=false;
for(i=0;i<len;i++)
{
if(document.form.check[i].checked==true)
{
flag=true;
break;
}
}
if(flag==false)
{
alert(select atlest one)
}

        Comment

        • vee10
          New Member
          • Oct 2006
          • 141
          #3
          Hi ,

          once check whether "form" is the id of the form and check is the id of the checkbox because i am not getting error and this code is fine


          Originally posted by shanmugamit
          Code:
          var len=document.form.check.length
flag=false;
for(i=0;i<len;i++)
{
if(document.form.check[i].checked==true)
{
flag=true;
break;
}
}
if(flag==false)
{
alert(select atlest one)
}

            Comment

            • acoder
              Recognized Expert MVP
              • Nov 2006
              • 16032
              #4
              Originally posted by shanmugamit
              Code:
              alert(select atlest one)
              alert('select at least one') - it should be a string.

                Comment

                • shanmugamit
                  New Member
                  • Feb 2008
                  • 45
                  #5
                  Mutiple check box validation

                  i have mutiple check box value error object required.......
                  Code:
                  aa
<script type="text/javascript">
function fnallocate()
{
var len=document.form.selcie.length
flag=false;
for(i=0;i<len;i++)
{
if(document.form.selcie[i].checked==true)
{
flag=true;
break;
}
}
if(flag==false)
{
alert("select atlest one");
}
</script>
<body>
<form action="checkbox.php" name="form" method="post">
<?
 $res=mysql_query("select * from cie where des='Resource Pipeline Associate' order by name");
$j=0;
		$norow=mysql_num_rows($res);
		$flag=false;
	while($td=mysql_fetch_array($res))
	{
				for($i=0;$i<count($can);$i++)

	        {	
					if("$td[1]"=="$can[$i]")
					{
						$flag=true;
						$i=count($can);
					}
					else
					{
					$flag=false;
					}
			}
				if($flag==true)
				{
//print"		<tr><td><input type=\"checkbox\" name=\"selcie\"  value=\"$td[1]\" checked>$td[1]</td></tr>";
				}
				else
				{
print"		<tr><td><input type=\"checkbox\" name=\"selcie\" value=\"$td[1]\" >$td[1]</td></tr>";				
				}
				$j++;
	}	
?>		 
  <input type="submit" name="Submit" value="Submit" onclick="fnallocate()">
</form>
<?
 
 
if(isset($_POST['Submit']))
{
    for ($i=0; $i<count($_POST['selcie']);$i++) {
       echo "<br />value $i = ".$_POST['selcie'][$i];
    }
}
?>
</body

                    Comment

                    • hsriat
                      Recognized Expert Top Contributor
                      • Jan 2008
                      • 1653
                      #6
                      [php]
                      <script type="text/javascript">
                      function fnallocate(len) {
                      for(i=0;i<len;i ++) {
                      if(document.get elementById('se lcie_'+i).check ed==true)
                      return true;
                      }
                      alert("select atlest one");
                      return false;
                      }
                      </script>
                      <body>
                      <form action="checkbo x.php" name="form" method="post">
                      <?
                      $res=mysql_quer y("select * from cie where des='Resource Pipeline Associate' order by name");
                      $j=0;
                      $norow=mysql_nu m_rows($res);
                      $flag=false;
                      while($td=mysql _fetch_array($r es))
                      {
                      for($i=0;$i<cou nt($can);$i++)
                      {
                      if($td[1]==$can[$i])
                      {
                      $flag=true;
                      $i=count($can);
                      }
                      else
                      {
                      $flag=false;
                      }
                      }
                      if($flag==true)
                      {
                      echo "<tr><td><i nput type=\"checkbox \" id=\"selice_".$ j."\" name=\"selcie[]\" value=\"$td[1]\" checked>$td[1]</td></tr>";
                      }
                      else
                      {
                      echo "<tr><td><i nput type=\"checkbox \" id=\"selice_".$ j."\" name=\"selcie[]\" value=\"$td[1]\" >$td[1]</td></tr>";
                      }
                      $j++;
                      }
                      ?>
                      <input type="submit" name="Submit" value="Submit" onclick="return fnallocate(".($ j-1).")">
                      </form>
                      <?
                      if(isset($_POST['Submit']))
                      {
                      for ($i=0; $i<count($_POST['selcie']);$i++)
                      {
                      echo "<br />value $i = ".$_POST['selcie'][$i];
                      }
                      }
                      ?>
                      </body>
                      [/php]

                      Try it this time...
                      Last edited by hsriat; Feb 26 '08, 07:45 AM. Reason: It was checkbox, not select

                        Comment

                        • acoder
                          Recognized Expert MVP
                          • Nov 2006
                          • 16032
                          #7
                          Originally posted by shanmugamit
                          i have mutiple check box value error object required...
                          Threads merged. Please do not double post.

                          Moderator

                            Comment

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