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<!DOCTYPE html> <html> <body> <audio controls onloadedmetadata="myFunction()"> <source src="horse.ogg" type="audio/ogg"> <source src="horse.mp3" type="audio/mpeg"> 你的浏览器不支持 audio 元素。 </audio> <script> function myFunction() { alert("Meta data for audio loaded"); } </script> </body> </html>