当 HTML 中媒体长度发生变化时执行脚本?
当 HTML 中音频/视频的长度发生变化时,ondurationchange 属性会被触发。
示例
你可以运行以下代码尝试实现 ondurationchange 属性:
<!DOCTYPE HTML> <html> <body> <video width = "300" height = "200" controls ondurationchange = "display(this)"> <source src = "/html5/foo.ogg" type = "video/ogg" /> <source src = "/html5/foo.mp4" type = "video/mp4" /> Your browser does not support the video element. </video> <script> function display(vLength) { alert("Video Length: " + vLength.duration + " seconds"); } </script> </body> </html>
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