Javascript-使用Facebook登錄，成功登錄后顯示用戶的個人資料圖片

Question

我正在制作一個Facebook測驗應用程序。 允許用戶使用Facebook登錄。 我試圖自動顯示用戶的個人資料圖片，而無需單擊“獲取信息”，但實際上它一直使代碼崩潰，並且登錄按鈕停止工作。 目前，它可以工作。 用戶登錄然后顯示個人資料圖片，用戶必須單擊“獲取信息”按鈕，它將顯示用戶的個人資料圖片。 我不希望“獲取信息”按鈕 ，我希望自動顯示個人資料圖片。

HTML：

<div id="status"></div>
   <div id="lgnbtn">
      <button onclick="login()" id="login">Login with Facebook</button>
   </div>
<button onclick="getInfo()" id="getInfo">Get Info</button>

Javascript：

// initialize and setup facebook js sdk
        window.fbAsyncInit = function() {
            FB.init({
              appId      : '1036296558220017',
              xfbml      : true,
              version    : 'v2.5'
            });

            FB.getLoginStatus(function(response) {
                if (response.status === 'connected') {
                    document.getElementById('status').innerHTML = 'We are connected.';
                    document.getElementById('login').style.visibility = 'hidden';
                } else if (response.status === 'not_authorized') {
                    document.getElementById('status').innerHTML = 'We are not logged in.'
                } else {
                    document.getElementById('status').innerHTML = 'You are not logged into Facebook.';
                }
            });
        };
        (function(d, s, id){
            var js, fjs = d.getElementsByTagName(s)[0];
            if (d.getElementById(id)) {return;}
            js = d.createElement(s); js.id = id;
            js.src = "//connect.facebook.net/en_US/sdk.js";
            fjs.parentNode.insertBefore(js, fjs);
        }(document, 'script', 'facebook-jssdk'));

        // login with facebook with extra permissions
        function login() {
            FB.login(function(response) {
                if (response.status === 'connected') {
                    document.getElementById('status').innerHTML = 'We are connected.';
                    document.getElementById('login').style.visibility = 'hidden';
                } else if (response.status === 'not_authorized') {
                    document.getElementById('status').innerHTML = 'We are not logged in.'
                } else {
                    document.getElementById('status').innerHTML = 'You are not logged into Facebook.';
                }
            }, {scope: 'email'});
        }

    // getting basic user info
        function getInfo() {
                FB.api('/me', 'GET', {fields: 'first_name,last_name,name,id,picture.width(150).height(150)'}, function(response) {
                document.getElementById('status').innerHTML = "<img src='" + response.picture.data.url + "'>";
            });

        }

Answer 1

調用getInfo(); 在FB.login成功處理程序中。

 window.fbAsyncInit = function() { FB.init({ appId: '1034762986580727', xfbml: true, version: 'v2.5' }); FB.getLoginStatus(function(response) { if (response.status === 'connected') { document.getElementById('status').innerHTML = 'We are connected.'; document.getElementById('login').style.visibility = 'hidden'; } else if (response.status === 'not_authorized') { document.getElementById('status').innerHTML = 'We are not logged in.' } else { document.getElementById('status').innerHTML = 'You are not logged into Facebook.'; } }); }; (function(d, s, id) { var js, fjs = d.getElementsByTagName(s)[0]; if (d.getElementById(id)) { return; } js = d.createElement(s); js.id = id; js.src = "//connect.facebook.net/en_US/sdk.js"; fjs.parentNode.insertBefore(js, fjs); }(document, 'script', 'facebook-jssdk')); // login with facebook with extra permissions function login() { FB.login(function(response) { if (response.status === 'connected') { document.getElementById('status').innerHTML = 'We are connected.'; document.getElementById('login').style.visibility = 'hidden'; getInfo(); // Invoke it here } else if (response.status === 'not_authorized') { document.getElementById('status').innerHTML = 'We are not logged in.' } else { document.getElementById('status').innerHTML = 'You are not logged into Facebook.'; } }, { scope: 'email' }); } // getting basic user info function getInfo() { FB.api('/me', 'GET', { fields: 'first_name,last_name,name,id,picture.width(150).height(150)' }, function(response) { console.log(response);//Check the response in console document.getElementById('status').innerHTML = "<img src='" + response.picture.data.url + "'>"; }); } 

 <div id="status"></div> <div id="lgnbtn"> <button onclick="login()" id="login">Login with Facebook</button> </div>