Key Up (Branch 4474)
✨ NOPPANUT KHAMMUEANG
<html> <head> <title>Let's Start </title> <style> :root{ --h:1; --l:50; } body{ background:hsl(var(--h), 100%, calc(var(--l)*1%)); } </style> </head> <body> <script type="text/javascript"> var h = 0; var l = 50; document.body.onkeyup = function(e){ console.log(e); switch (e.keyCode){ case 40: document.documentElement.style.setProperty("--h", (h-=10)); break; case 38: document.documentElement.style.setProperty("--h", (h+=10)); break; case 39: document.documentElement.style.setProperty("--l", (l+=10)); break; case 37: document.documentElement.style.setProperty("--l", (l-=10)); break; } } </script> </body> </html>