从javascript SDK获取更高分辨率的Facebook头像

<script async defer crossorigin="anonymous" src="https://connect.facebook.net/en_US/sdk.js#xfbml=1&version=v12.0&appId=YOUR_APP_ID&autoLogAppEvents=1" nonce="YOUR_NONCE_VALUE"></script>

FB.init({
  appId      : 'YOUR_APP_ID',
  cookie     : true,
  xfbml      : true,
  version    : 'v12.0'
});

FB.login(function(response) {
  if (response.authResponse) {
    console.log('授权成功');
  } else {
    console.log('授权失败');
  }
}, {scope: 'public_profile'});

FB.api('/me/picture?type=large', function(response) {
  var profilePicUrl = response.data.url;
  console.log('用户头像URL：' + profilePicUrl);
});