Javascript 文本框值在angularjs中返回空

我对angularjs是新手。我在获取文本框的值时遇到了一些问题。它只返回一个空字符串，我想这是因为我声明每个模型都等于。这是我的密码：

HTML

PHP

ng submit=update\u updateaccount.$submitted&&account.$valid而不是$scope.account\u update中的函数名错误

参见示例plnkr

否则你的角度代码就没问题了

另外 您可以使用：if$scope.account.$valid{}代替ifisValid{}，并且不需要传递任何值

<form name="account" ng-submit="update_account(account.$submitted && account.$valid)" novalidate>
      <input required placeholder="{{placeholderForName}}" name="name" ng-model="name" type="text">
       <input required placeholder="{{placeholderForUname}}" name="uname" ng-model="uname" type="text">
       <input required placeholder="{{placeholderForPassw}}" name="passw" ng-model="passw" type="password">
      <button type="submit">Save!</button>
</form>  

$scope.name = "";
$scope.uname = "";
$scope.passw = "";

$scope.account_update = function(isValid){
    if(isValid){

        $http.post('query?action=tnoucca_etadpu',{
            'name': $scope.name,
            'uname': $scope.uname,
            'passw': $scope.passw
        })
        .then(function(response){

            alert(response.data); // alerts empty string

        })
        .catch(function(response){
            $scope.showToast("SYS_ERROR: " + response.data);
        });

    }
};  

if ($action == "tnoucca_etadpu") {

    $data = json_decode(file_get_contents("php://input"));

    $name = $data->name;
    $uname = $data->uname;
    $pw = $data->passw;

    echo $name;
}