Friday, November 18, 2016

Basic Form Validation using Javascript & HTML

Basic Form Validation using Javascript & HTML

<html>
  
   <head>
      <title>Form Validation</title>
     
     <script type="text/javascript">
   <!--
      // Form validation code will come here.
      function validate()
      {
     
         if( document.myForm.Name.value == "" )
         {
            alert( "Please provide your name!" );
            document.myForm.Name.focus() ;
            return false;
         }
        
         if( document.myForm.EMail.value == "" )
         {
            alert( "Please provide your Email!" );
            document.myForm.EMail.focus() ;
            return false;
         }
        
         if( document.myForm.Zip.value == "" ||
         isNaN( document.myForm.Zip.value ) ||
         document.myForm.Zip.value.length != 5 )
         {
            alert( "Please provide a zip in the format #####." );
            document.myForm.Zip.focus() ;
            return false;
         }
        
         if( document.myForm.Country.value == "-1" )
         {
            alert( "Please provide your country!" );
            return false;
         }
         return( true );
      }
function validateEmail()
      {
         var emailID = document.myForm.EMail.value;
         atpos = emailID.indexOf("@");
         dotpos = emailID.lastIndexOf(".");
        
         if (atpos < 1 || ( dotpos - atpos < 2 ))
         {
            alert("Please enter correct email ID")
            document.myForm.EMail.focus() ;
            return false;
         }
         return( true );
      }
   //-->
</script>
     
   </head>
  
   <body>
      <form action="/cgi-bin/test.cgi" name="myForm" onsubmit="return(validate());">
         <table cellspacing="2" cellpadding="2" border="1">
           
            <tr>
               <td align="right">Name</td>
               <td><input type="text" name="Name" /></td>
            </tr>
           
            <tr>
               <td align="right">EMail</td>
               <td><input type="text" name="EMail" /></td>
            </tr>
           
            <tr>
               <td align="right">Zip Code</td>
               <td><input type="text" name="Zip" /></td>
            </tr>
           
            <tr>
               <td align="right">Country</td>
               <td>
                  <select name="Country">
                     <option value="-1" selected>[choose yours]</option>
                     <option value="1">USA</option>
                     <option value="2">UK</option>
                     <option value="3">INDIA</option>
                  </select>
               </td>
            </tr>
           
            <tr>
               <td align="right"></td>
               <td><input type="submit" value="Submit" /></td>
            </tr>
           
         </table>
      </form>
     
   </body>
</html>