如何获取HTML播放器的源代码？

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<!DOCTYPE html>
<html lang="zh">
<head>
    <meta charset="UTF8">
    <meta name="viewport" content="width=devicewidth, initialscale=1.0">
    <title>HTML播放器</title>
    <style>
        #videocontainer {
            position: relative;
            width: 100%;
            maxwidth: 640px;
            margin: 0 auto;
        }
        video {
            width: 100%;
            height: auto;
        }
        .controls {
            position: absolute;
            bottom: 10px;
            left: 10px;
            right: 10px;
            display: flex;
            justifycontent: spacebetween;
            alignitems: center;
        }
        button {
            background: rgba(255, 255, 255, 0.7);
            border: none;
            padding: 5px 10px;
            cursor: pointer;
        }
    </style>
</head>
<body>
    <div id="videocontainer">
        <video id="video" src="yourvideofile.mp4"></video>
        <div class="controls">
            <button id="playpause">播放/暂停</button>
            <button id="mute">静音</button>
            <input type="range" id="volumeslider" min="0" max="1" step="0.1" value="1">
            <span id="currenttime">00:00</span>
            <input type="range" id="seekslider" min="0" max="100" step="1" value="0">
            <span id="duration">00:00</span>
        </div>
    </div>
    <script>
        const video = document.getElementById('video');
        const playPauseBtn = document.getElementById('playpause');
        const muteBtn = document.getElementById('mute');
        const volumeSlider = document.getElementById('volumeslider');
        const currentTimeDisplay = document.getElementById('currenttime');
        const seekSlider = document.getElementById('seekslider');
        const durationDisplay = document.getElementById('duration');
        function formatTime(seconds) {
            const minutes = Math.floor(seconds / 60);
            seconds = Math.floor(seconds % 60);
            return${minutes.toString().padStart(2, '0')}:${seconds.toString().padStart(2, '0')};
        }
        function updateDuration() {
            const duration = video.duration;
            durationDisplay.textContent = formatTime(duration);
            seekSlider.max = Math.ceil(duration);
        }
        function updateCurrentTime() {
            const currentTime = video.currentTime;
            currentTimeDisplay.textContent = formatTime(currentTime);
            seekSlider.value = Math.ceil(currentTime);
        }
        function updateSeekSlider() {
            const value = seekSlider.value;
            video.currentTime = value;
        }
        function togglePlayPause() {
            if (video.paused) {
                video.play();
                playPauseBtn.textContent = '暂停';
            } else {
                video.pause();
                playPauseBtn.textContent = '播放';
            }
        }
        function toggleMute() {
            video.muted = !video.muted;
            muteBtn.textContent = video.muted ? '取消静音' : '静音';
        }
        function updateVolume() {
            video.volume = volumeSlider.value;
        }
        video.addEventListener('loadedmetadata', updateDuration);
        video.addEventListener('timeupdate', updateCurrentTime);
        playPauseBtn.addEventListener('click', togglePlayPause);
        muteBtn.addEventListener('click', toggleMute);
        volumeSlider.addEventListener('input', updateVolume);
        seekSlider.addEventListener('input', updateSeekSlider);
    </script>
</body>
</html>

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