Detailed explanation of examples of Enter key login

  <div> <p><a>登    录</a></p>
   </div>

  var SubmitOrHidden = function(event) {
        e = event ? event : (window.event ? window.event : null);
        if (e.keyCode == 13) {
            UserLogin();
        }
    }
    window.document.onkeydown = SubmitOrHidden;
    function UserLogin() {
        var username = UserValidate.strtrim($("#user_name").val());
        var password = UserValidate.strtrim($("#user_password").val());
        var captcha  = UserValidate.strtrim($("#user_captcha").val());
        var user_role = $("#user_role").val();
}

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