AngularJs ユーザーログインの問題の処理

<p class="register-frame-all">
  <p class="register-frame">
   <p class="register-msg">
    <i></i>
    <form name="loginForm" ng-submit="loginAction()">
     <p class="form-group">
      <p class="input-group">
       <span class="input-group-addon register-user"></span>
       <input autocomplete="off" type="number" class="form-control" placeholder="请输入手机号" required ng-model="loginData.loginName" name="loginName">
      </p>
      <p class="input-group">
       <span class="input-group-addon register-pwd"></span>
       <input type="password" class="form-control" placeholder="请输入密码" required ng-model="loginData.pwd" name="pwd">
      </p>
      <button type="submit" class="btn btn-block btn-danger"
        ng-disabled="!( (loginForm.loginName.$valid) && (loginForm.pwd.$valid) )">登录</button>
      <em></em>
     </p>
    </form>
   </p>
   <p class="register-pic" ng-style="registerRnum"></p>
  </p>
 </p>

$http({
    url:G.apiUrl_dl+'loginByPhone',
    method:'post',
    data:{
     'phone':loginName,
     'pwd':pwd
    },
    headers:{'Content-Type':'application/x-www-form-urlencoded'},
    transformRequest: function(obj) {
     var str = [];
     for(var p in obj){
      str.push(encodeURIComponent(p) + "=" + encodeURIComponent(obj[p]));
     }
     return str.join("&");
    }
   }).success(function(data){
    // 登录成功后的操作...18     19    });