用户上传视频时，要获取用户所选的视频的时长，如果太长就提示用户不能上传
通过video标签来获取视频的时长
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Document</title>
</head>
<body>
<input type="file" id="file" />
<script>
let file = document.getElementById('file')
file.addEventListener('change', function (e) {
let file = e.target.files[0]
let fileurl = URL.createObjectURL(file)
let video = document.createElement('video')
video.addEventListener('loadedmetadata', function (e2) {
console.log(video.duration)
})
video.src = fileurl
})
</script>
</body>
</html>
网友评论