<!DOCTYPE html>
<html>
<head>
<title>js调用摄像头</title>
<meta charset="utf-8"/>
</head>
<body>
<video id="video" width="600" height="600"></video>
<script>
let video = document.getElementById("video");
let promise = navigator.mediaDevices.getUserMedia({
video: true,
audio: false
});
promise.then(function (MediaStream) {
video.srcObject = MediaStream;
video.play();
});
</script>
</body>
</html>