php - What is the action doing in this html page? -


can body me analysis following html tell me form action doing logined_form?

<form name="logined_form" action="login" method="post" style="display:none;" >     <input type="hidden" name="logined" value="true" />          <input type="hidden" name="client_id" value="78a32e4ee9d4242134124" />                           <input type="hidden" name="display" value="web" />                               </form>  <div class="login" id="nologineddiv">     <form name="login_form" action="" method="post" onsubmit="return check_form();">         <ul>             <li class="fix"><input name="username" class="u" value="email" type="text" onclick="username_onclick();" onblur="username_onblur();"/>             </li>             <li class="fix"><input name="password" class="p" type="password" />             </li>             <li>&nbsp;</li>             <li class="fix"><button>authorize</button>             </li>         </ul>     </form> </div>  <script type="text/javascript">      var login_form = null;     var logined_form = null;     var xmlhttp = null;      function init(){         login_form = document.forms["login_form"];         logined_form = document.forms["logined_form"];     }      function submitautologin(){         logined_form.submit();     }      var check_form = function(){         if(login_form["username"].value == "email"){             login_form["username"].select();             return false;         }         if(login_form["password"].value == ""){             login_form["password"].select();             return false;         }         xmlhttp = createhttpobject();         if (xmlhttp) {             xmlhttp.open("post", "https://api.mywebsite.com/login.do", true);             xmlhttp.onreadystatechange = function(){                 if (xmlhttp.readystate == 4) {                     eval(xmlhttp.responsetext);                 }             };             xmlhttp.setrequestheader("content-type", "application/x-www-form-urlencoded");              var query = "_=_";             query += "&loginname=" + encodeuricomponent(login_form["username"].value);             query += "&password=" + encodeuricomponent(login_form["password"].value);             query += "&act=ajaxlogin2json";             query += "&app=oauth2";             query += "&callback=login_callback";             xmlhttp.send(query);         }          return false;     };      var login_callback = function(result){         var status = result["system"];         if(status == 0){             showmsg("password wrong");             return ;         }else if(status < 0){             showmsg("failed login");             return ;         }         submitautologin();     }; </script>

after login successfully, submitautologin() function called logined_form submit. don't understand action="login" means. can help? thanks

action property mentions exact action taken on form-submission. action property holds value of "script page" further contains logic manipulate data received form.

in code have posted above - action kept empty , on onsubmit event calling javascript function check_form().

check_form() further makes ajax call server-side script , manipulates form values.


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