У вашего броузера проблема в совместимости с HTML5
Sharing content on your website can be very effective using tweet buttons. It lets visitors to your website share your website content including its links to your website. This is a great way to increase traffic on your website.
In this video, Tweet buttons are used on each post from the database. When a user clicks on the tweet button of a particular post, the quote of that post together with the author of the quote are posted on the visitor's twitter profile. Additional information such as hashtags and usernames are also included in the tweet.
Check out my videos on submitting data to database and displaying it:
https://www.youtube.com/watch?v=WU2C4bX8zLo
and
https://www.youtube.com/watch?v=gTQU_veJ6Kk
Support me on Patreon: https://goo.gl/hv7yjB
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