No captcha?

Hello,
I am learning programming and just discovered this website. But I am curious, how does it protect its users from spammers (people who post illegal or annoying things) without a reCaptcha? I thought clicking this blue box is required to prove that you are not a robot, can you please share any javascript that you use for this purpose?
Thank you and have a nice day,
Brian

if the stale >>380 is allowed again https://dis.tinychan.net/read/anarchy/1594578572/38,42,43,44 by the site administration, then:

🐘 → >>368
🐘 → https://dis.tinychan.net/read/prog/1624693761#reply_4
🐘 → https://dis.tinychan.net/read/anarchy/1582047203#reply_328

cavemen-tier bashing with clubs: "Me smash thread!" >>318