通过peerjs无需后台服务器前端实现视频通话功能
夏飞鹏
直接上代码，粘贴即可使用，俩台设备打开网页后，将一台设备的ID填入到另一台设备中，点击确认按钮直接进行视频通话。
<html>
<head>
<title>peerjs视频聊天</title>
<meta charset="utf-8">
<script src="https://cdn.jsdelivr.net/npm/jquery/dist/jquery.min.js"></script>
<script src="https://cdn.bootcdn.net/ajax/libs/peerjs/1.3.1/peerjs.min.js"></script>
</head>
<body>
<h3>视频聊天</h3>
<video id="localVideo" style="width: 400px;height: 300px;"></video>
<div style="text-align: left">
自己ID<input type="text" id="myPeerid"/>
<br>
对方ID<input type="text" id="youPeerid"/>
<br>
<button id="callBtn">确认</button>
</div>
<video id="remoteVideo" style="width: 400px;height: 300px;"></video>
<script type="text/javascript">
//媒体设备的兼容方法
function getUserMedia(constrains,success,error){
if(navigator.mediaDevices.getUserMedia){
navigator.mediaDevices.getUserMedia(constrains).then(success).catch(error);
} else if (navigator.webkitGetUserMedia){
navigator.webkitGetUserMedia(constrains).then(success).catch(error);
} else if (navigator.mozGetUserMedia){
navagator.mozGetUserMedia(constrains).then(success).catch(error);
} else if (navigator.getUserMedia){
navigator.getUserMedia(constrains).then(success).catch(error);
}
}
var localVideo = document.querySelector('video#localVideo');
var remoteVideo = document.querySelector('video#remoteVideo');
var localStream=null;
$(function(){
getUserMedia({video: true, audio: true}, function(stream) {
localStream=stream;
localVideo.srcObject = stream;
localVideo.autoplay = true;
localVideo.play();
}, function(err) {
console.log('Failed to get local stream' ,err);
});
var peer = new Peer();
peer.on('open', function(id) {
$("#myPeerid").val(id);
});
peer.on('call', function(call) {
call.answer(localStream);
call.on('stream', function(remoteStream) {
console.log(remoteStream);
remoteVideo.srcObject = remoteStream;
remoteVideo.autoplay = true;
});
});
$('#callBtn').click(function(){
var remoteId=$("#youPeerid").val();
if(remoteId==""){
alert("请输入对方ID");return;
}
var call = peer.call(remoteId,localStream);
call.on('stream', function(remoteStream) {
console.log(remoteStream);
remoteVideo.srcObject = remoteStream;
remoteVideo.autoplay = true;
});
call.on('close', function() {
console.log("call close");
_this.loading.close();
});
call.on('error', function(err) {
console.log(err);
_this.loading.close();
});
});
});
</script>
</body>
</html>
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