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浏览器屏幕共享

2022-07-24 21:03:21 作者：互联网

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <video autoplay playsinline muted></video>
    <button id="startButton">开始</button>
    <div id="errorMsg" style="color:red;">这里显示错误信息</div>
    <script>
        // let voices=[] //用了存放预设的人物信息
        // speechSynthesis.onvoiceschanged=function(){
        //     voices=speechSynthesis.getVoices().filter(i=>i.lang.includes('zh'))
        //     console.log(voices);
        //     let sayer=new SpeechSynthesisUtterance(`
        //     我叫你好`)
        //     sayer.voice=voices[0]
        //     speechSynthesis.speak(sayer)
        // }
        const startButton=document.getElementById('startButton')
        startButton.addEventListener('click',()=>{
            navigator.mediaDevices.getDisplayMedia({video:true}).then(handleSuccess,handleError)
        })
        function handleSuccess(stream){
            startButton.disabled=true
            const video=document.querySelector('video')
            video.srcObject=stream
            stream.getVideoTracks()[0].addEventListener('ended',()=>{
                errorMsg('The user has ended sharing the screen')
                startButton.disabled=false
            })
        }
        function handleError(error){
            errorMsg(`getDisplayMedia error:${error.name}`,error)
        }
        function errorMsg(msg,error){
            const errorElement=document.querySelector('#errorMsg')
            errorElement.innerHTML+=`<p>${msg}</p>`
            if(typeof error!=='undefined'){
                console.error(error);
            }
        }
    </script>

</body>
</html>

标签：function,浏览器,errorMsg,voices,startButton,video,error,屏幕,共享
来源： https://www.cnblogs.com/7c89/p/16515450.html