In dynamically generated HTML pages, it's an easy task for you to include the
g_id_onload <div> tag when the login is required, and then remove it
after a user session has been established. However, how can you toggle One Tap
display for your static HTML pages? In this case, you cannot change the HTML
content.
One Tap can toggle its display status by checking for a cookie that you specify
with the data-skip_prompt_cookie attribute. If the cookie isn't set or if the
value is empty, our client library functions as normal. Otherwise, the client
library stops running and One Tap won’t display.
You can set your cookie name with the following code snippet:
<div id="g_id_onload"
data-client_id="YOUR_GOOGLE_CLIENT_ID"
data-login_uri="https://your.domain/your_login_endpoint"
data-skip_prompt_cookie="sid">
</div>