How to validate a form and check for empty field and field length in JavaScript

1 Answer

<!DOCTYPE html> 
<html> 
<script>
function validate() {  
    var name = document.loginform.name.value;  
    var password = document.loginform.password.value;  

    if (name === null || name === "") {   
      alert("Name is empty");  
      return false;  
    } else if (password.length < 8) {  
                alert("Password is less than 8 characters");  
                return false;  
           }  
}  
</script>  
<body>
<form name="loginform" method="post" action="login.php" onsubmit="return validate()" >  
    Name: <input type="text" name="name"><br/>  
    Password: <input type="password" name="password"><br/>  
<input type="submit" value="register">  
</form>
</body> 
</html>

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answered Oct 10, 2019 by avibootz

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How to validate a form and check for empty field and field length in JavaScript

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