xmpp.chapril.org-conversejs/src/templates/login_panel.html

<form id="converse-login" method="post">
    <label>{{label_username}}</label>
    <input type="username" name="jid" placeholder="Username">
    <label>{{label_password}}</label>
    <input type="password" name="password" placeholder="Password">
    <input class="login-submit" type="submit" value="{{label_login}}">
    <span class="conn-feedback"></span>
</form>