javascript - JS send message on correct input -

i have submit form users using register:

<form method="post" action="<?php echo $_server["php_self"]; ?>" name="form" onsubmit="return validate(this);">  <div class="form-group">   <input type="text" id="name" name="name" class="inputs" /><br />   <input type="text" id="email" name="email" class="inputs" /><br />   <input type="password" id="password" name="password" class="inputs" />   </div>  <input type="submit" class="btn1" name="register" value="register" /> </form> 

the js code checking if data entered correctly. if user enters incorrect date js code showing message. want show message when data entered correctly. tried add row if (errors.length < 0) didn't work. js code sends me message "correct input" , message "dont use symbols...\n".

how can make working?

here js code:

<script type="text/javascript">  var ck_name = /[a-za-z0-9. ]{3,25}$/;  var ck_email = /^[a-za-z0-9._-]+@[a-za-z0-9.-]+\.[a-za-z]{2,4}$/;  var ck_password =  /^[a-za-z0-9!@#$%^&*()_]{6,20}$/;   function validate(form)  {  var name = form.name.value;  var email = form.email.value;  var password = form.password.value;   var errors = [];   if (!ck_name.test(name))   {   errors[errors.length] = "name error! .";   }   if (!ck_email.test(email))   {   errors[errors.length] = "email error! .";   }   if (!ck_password.test(password))    {   errors[errors.length] = "password error!";   }   if (errors.length > 0)    {   reporterrors(errors);   return false;   }   return true;  }   function reporterrors(errors)  {  var msg = "dont use symbols...\n";  (var = 0; i<errors.length; i++) {  var numerror = + 1;  msg += "\n" + numerror + ". " + errors[i];  }  alert(msg);  } </script> 

errors.length never won't minor of 0. must use equal (==). works! :-)

update

if (errors.length == 0) {  alert('correct input'); } 

that before return true statement , after if (errors.length > 0).