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JavaScript FPS meter - Calculating frames per second
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| function fpsMeter() { | |
| let prevTime = Date.now(), | |
| frames = 0; | |
| requestAnimationFrame(function loop() { | |
| const time = Date.now(); | |
| frames++; | |
| if (time > prevTime + 1000) { | |
| let fps = Math.round( ( frames * 1000 ) / ( time - prevTime ) ); | |
| prevTime = time; | |
| frames = 0; | |
| console.info('FPS: ', fps); | |
| } | |
| requestAnimationFrame(loop); | |
| }); | |
| } | |
| fpsMeter(); |
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Copy and paste this script into your browser console to measure your app's frames per second (fps) for real-time performance insights and optimization.