Created
May 19, 2021 10:26
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rAF fps
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| <!doctype html> | |
| <html> | |
| <head><title>rAF fps</title></head> | |
| <body> | |
| <output id="fps"></output> | |
| <script> | |
| const outputText= document.querySelector('#fps').appendChild(document.createTextNode('')); | |
| let prev = -Infinity; | |
| let count = 0; | |
| requestAnimationFrame(function frame(now) { | |
| requestAnimationFrame(frame); | |
| const diff = now - prev; | |
| count++; | |
| if (diff >= 1000) { | |
| outputText.nodeValue = (count / (now - prev) * 1000).toFixed(2); | |
| count = 0; | |
| prev = now; | |
| } | |
| }); | |
| </script> | |
| </body> | |
| </html> |
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