js在浏览器获取电脑所有摄像头切换预览画面效果代码-html代码-BFW代码库

js在浏览器获取电脑所有摄像头切换预览画面效果代码

代码语言：html

所属分类：多媒体

代码描述：js在浏览器获取电脑所有摄像头切换预览画面效果代码

下面为部分代码预览，完整代码请点击下载或在bfwstudio webide中打开

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Camera Switcher</title>
    <style>
        body {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            height: 100vh;
            background-color: #f0f0f0;
        }
        video {
            border: 1px solid #ccc;
            border-radius: 4px;
            margin-top: 20px;
            width: 640px;
            height: 480px;
        }
    </style>
</head>
<body>
    <select id="cameraSelect"></select>
    <video id="video" autoplay></video>
    <script>
        async function getCameras() {
            try {
                // 枚举所有媒体设备
                const devices = await navigator.mediaDevices.enumerateDevices();
                const videoDevices = devices.filter(device => device.kind === 'videoinput');
                
                // 获取下拉框元素
                const cameraSelect = document.getElementById('cameraSelect');
                
                // 清空下拉框内容
                cameraSelect.innerHTML = '';
                
                // 添加视频输入设备到下拉框中
                videoDevices.forEach((device, index) => {
                    const option = document.createElement('option');
                    option.value = device.deviceId;
                    option.text = device.label || `Camera ${index + 1}`;
          .........完整代码请登录后点击上方下载按钮下载查看