javascript - Login form is protected against userscripts? -

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here login form site rutracker.org:

<form id="top-login-form" action="http://login.rutracker.org/forum/login.php" method="post" style="display: inline;"> <input id="top-login-uname" type="text" placeholder="имя" accesskey="l" tabindex="1" name="login_username"> <input id="top-login-pwd" type="password" placeholder="пароль" tabindex="2" name="login_password"> <input id="top-login-btn" type="submit" tabindex="3" value="вход" name="login"> </form>

here greasemonkey script autologin:

// ==userscript== // @include     http://rutracker.org/* // @grant       none // ==/userscript==  var f = document.getelementbyid("top-login-form"); f.elements.nameditem("login_username").value = "xxxxxx"; f.elements.nameditem("login_password").value = "yyyyyyy"; f.elements.nameditem("login").value = "%e2%f5%ee%e4"; f.submit();

the problem 2 values sent, post request login_username=xxxxxxx&login_password=yyyyyyy insread of login_username=xxxxxxx&login_password=yyyyyyy&login=%e2%f5%ee%e4

so login=%e2%f5%ee%e4 missing.

is kind of protection against userjs?

how can solve problem?

login not field, it's button. don't fill - click it. no need submit - implied click.

f.elements.nameditem("login").click()

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