Check uncheck all checkboxes javascript

Hi friends. To check or uncheck form check boxes, use this javascript function.


The Html Form [ For static contents ]

 <script type="text/javascript">
  function checkAll(formName, status){
   for (i = 0; i < formName.length; i++)
   formName[i].checked = status.checked? true:false
   }
 </script>
  
 <form name ="checkForm">
  <input type="checkbox" name="all" 
      onClick="checkAll(this.form,this)">Check/Uncheck All
  <input type="checkbox" name="one" value ="one">One
  <input type="checkbox" name="two" value ="two">Two
  <input type="checkbox" name="three" value ="three">Three
  <input type="checkbox" name="four" value ="four">Four
  <input type="checkbox" name="five" value ="five">Five
 </form>

The Php Form [ For Dynamic contents ]

 <script type="text/javascript">
  function checkAll(formName, status){
   for (i = 0; i < formName.length; i++)
   formName[i].checked = status.checked? true:false
   }
 </script>
 
 <form name ="checkForm">
  <input type="checkbox" name="all" 
        onClick="checkAll(this.form,this)">Check/Uncheck All
  <?php
  mysql_connect('localhost','username','password');
  mysql_select_db('databaseName');
  
  $sql="select id,name from tableName";
  $res=mysql_query($sql);
  while($row=mysql_fetch_array($res)){
   echo '<input type="checkbox" name="chk[]" 
       value ='.$row["id"].'>'.$row["name"].'<br>';
  }
  ?>
 </form>

The Example

Check/Uncheck All
One
Two
Three
Four
Five