JavaScript Form Validation

  In this form validation used for blank system method, its not allow for without form filling.if user not type for employee name its not  allow for submit section.




Example:

<html>
<head>
<script type = "text/javascript">
   
      function formvalidation() {
      
         if( document.myform.ename.value == "" ) {
            alert( "Please Enter your name!" );
            document.myform.ename.focus() ;
            return false;
         }
		 
		  if( document.myform.designation.value == "" ) {
            alert( "Please Enter your Designation!" );
            document.myform.designation.focus() ;
            return false;
         }
		 return( true );
      }
  
</script>
</head>
<body>
<div style="margin-left:300px;">
<h2>Employee Details:</h2>
<form name = "myform" onsubmit = "return(formvalidation());">
Name :<input type = "text" name = "ename" ><br><br>
Designation :<input type = "text" name = "designation" ><br><br>
<input type = "submit" value = "Submit">

</form>
</div>
</body>
</html>

Output:

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