无需javascript即可顺利登录

Question

What i want: clicking on login / pressing on enter will validate the login and redirect if correct (without javascript).

What i tried:

1. A form with a submit button and validating on an other php page PROBLEM: if login is not correct, i don't want to redirect and display an error message instead.

<form action="loginServerside.php" method='POST'>

1. A form with a submit button and validating when the submit button is set. PROBLEM: submit button reloads page and then redirects if login was correct

<form method='POST'>
      <input name="email" type="email" id="email" placeholder="Email" />
      <input name="pass" type="password" id="pass" placeholder="Password">
      <input type="submit" name='login' value="LOGIN" id="login" class="button"/>
</form>
if (isset($_POST['login']))
     /*validate*/

1. Trying to prevent the page reload by using an input type="button" PROBLEM: the isset only works for submit buttons

I would appreciate the help!

Answer 1

You can't run server-side code (login credentials validation, in this case) without reloading the page. This requires AJAX, which involves Javascript.