Question

我正在尝试将Google签名按钮集成到我的网络应用程序中。这是我第一次这样做，而且我在控制台日志中不断收到以下消息......

未定义auth2

此外，当我刷新页面时，谷歌按钮显示“登录”而不是“登录”

以下是我的代码。谢谢！

 <script>


    gapi.load('auth2', function () {
        auth2 = gapi.auth2.init();

        // Sign the user in, and then retrieve their ID.
        auth2.signIn().then(function () {
            console.log(auth2.currentUser.get().getId());
        });




    });


    if (auth2.isSignedIn.get()) {
  var profile = auth2.currentUser.get().getBasicProfile();
  console.log('ID: ' + profile.getId());
  console.log('Full Name: ' + profile.getName());
  console.log('Given Name: ' + profile.getGivenName());
  console.log('Family Name: ' + profile.getFamilyName());
  console.log('Image URL: ' + profile.getImageUrl());
  console.log('Email: ' + profile.getEmail());
}


      function onSignIn(googleUser) {
        // Useful data for your client-side scripts:
        var profile = googleUser.getBasicProfile();
        console.log("ID: " + profile.getId()); // Don't send this directly to your server!
        console.log('Full Name: ' + profile.getName());
        console.log('Given Name: ' + profile.getGivenName());
        console.log('Family Name: ' + profile.getFamilyName());
        console.log("Image URL: " + profile.getImageUrl());
        console.log("Email: " + profile.getEmail());

        // The ID token you need to pass to your backend:
        var id_token = googleUser.getAuthResponse().id_token;
        console.log("ID Token: " + id_token);
      }











    </script>

Answer 1

不要让Google API误导你。错误可能是因为这一行（并且代码在（＆＃39;严格模式＆＃39;）中：

auth2 = gapi.auth2.init();

因为错误表明＆＃34; auth2＆＃34;未定义（在严格模式下，不允许在全局空间中创建变量）。声明如下：

var auth2 = gapi.auth2.init();

同样的事情发生在gapi auth2 init failing with "Uncaught ReferenceError: auth2 is not defined"。

为什么我一直没有定义auth2？

1 个答案: