Javascript

HOW TO VALIDATE TEXTBOX IN JAVASCRIPT?

Here is a very simple text box validation from javascript. This will validate empty values in html textbox. Copy and Paste this code after the <header> .

<script type="text/javascript">
function validateform(regform)
{
    if (""==document.forms.regform.uname.value){
    alert("Please enter your desired username!.");
    document.getElementById('uname').focus();
    return false;
    }
   
    if (""==document.forms.regform.upassword.value){
    alert("Please enter your desired password!.");
    document.getElementById('upassword').focus();
    return false;
    }
   
    if (""==document.forms.regform.upassword2.value){
    alert("Please Re-Enter your password!");
    document.getElementById('upassword2').focus();
    return false;
    }
   
    if (""==document.forms.regform.department.value){
    alert("Please enter your department!.");
    document.getElementById('department').focus();
    return false;
    }
   
    if (""==document.forms.regform.email.value){
    alert("Please enter your email address!. (Personal not Corporate)");
    document.getElementById('email').focus();
    return false;
    }
   
    return true;
}
</script>

Good Luck and Enjoy using this code.