检测当前是否有网络用户登录Google? [英] Detect if a web user is currently logged in Google?

问题描述

假设仅当我知道访问我的网站的用户具有有效的Google帐户并且该帐户已登录该帐户时，我才想显示某些内容.

Suppose I want to display certain content only if I know the user coming to my website has a valid Google Account and it's logged into that account.

有没有办法用Javascript做到这一点?我知道Facebook API提供了告知用户状态(登录Facebook)的方法，并且我确定我也看到过使用Google帐户执行此操作的网站，但是在Google中搜索相关术语会使我无处可去因为搜索字词的针对性很差.

Is there any way to do this in Javascript? I know that the Facebook API provides ways to tell the status of a user (logged in Facebook) and I'm sure I've seen sites doing this with Google Accounts as well, but searching for the relevant terms in Google leads me to nowhere as the search terms are poorly focused.

谢谢您的帮助.

推荐答案

此博客声称已通过检查与G +/twitter/etc提供的社交平台相关的图像返回值来做到这一点

This blog claims to have done it, via checking for image return values linked to the social platforms provided by G+ / twitter / etc

http://www.tomanthony.co.uk/blog /detect-visitor-social-networks/

<img style="display:none;"
onload="show_login_status('Google', true)"
onerror="show_login_status('Google', false)"
src="https://accounts.google.com/CheckCookie?continue=https%3A%2F%2Fwww.google.com%2Fintl%2Fen%2Fimages%2Flogos%2Faccounts_logo.png&followup=https%3A%2F%2Fwww.google.com%2Fintl%2Fen%2Fimages%2Flogos%2Faccounts_logo.png&chtml=LoginDoneHtml&checkedDomains=youtube&checkConnection=youtube%3A291%3A1"
/>

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