html5实现手机触摸出现录音以及离开停止录音并上传的功能（代码）

互联网 18-8-20

<!DOCTYPE html><html><head>     <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />     <title></title>     <script type="text/javascript" scr="record.js"></script></head><body>     <p>         <input id="microphone" type="button" />     </p>     <script>     <script  type="text/javascript">             var microDome=document.getElementById('microphone');             var recorder;             var btnElem=document.getElementById("microphone");//获取ID         function initEvent() {             btnElem.addEventListener("touchstart", function(event) {                 //event.preventDefault();//阻止浏览器默认行为                 HZRecorder.get(function (rec) {                     recorder = rec;                     recorder.start();                 });                       });             btnElem.addEventListener("touchend", function(event) {                 //event.preventDefault();                 HZRecorder.get(function (rec) {                     recorder = rec;                     recorder.stop();                 })                 recorder.upload("/upload", function (state, e) {                     switch (state) {                                             case 'uploading':                                                 //var percentComplete = Math.round(e.loaded * 100 / e.total) + '%';                             break;                                                     case 'ok':                                                         //alert(e.target.responseText);                             alert("上传成功");                                                         break;                                                     case 'error':                             alert("上传失败");                                                         break;                                                     case 'cancel':                             alert("上传被取消");                                                         break;                     }                 });                             });         };         initEvent();             <script/>

下面是js:

//兼容 window.URL = window.URL || window.webkitURL; //获取计算机的设备：摄像头或者录音设备 navigator.getUserMedia = navigator.getUserMedia || navigator.webkitGetUserMedia || navigator.mozGetUserMedia || navigator.msGetUserMedia;var HZRecorder = function (stream, config) {     config = config || {};     config.sampleBits = config.sampleBits || 8;      //采样数位 8, 16     config.sampleRate = config.sampleRate || (44100 / 6);   //采样率(1/6 44100)      //创建一个音频环境对象     var audioContext = window.AudioContext || window.webkitAudioContext;         var context = new audioContext();         var audioInput = context.createMediaStreamSource(stream);         // 第二个和第三个参数指的是输入和输出都是单声道,2是双声道。     var recorder = context.createScriptProcessor(4096, 1, 1);         var audioData = {         size: 0          //录音文件长度         , buffer: []     //录音缓存         , inputSampleRate: context.sampleRate    //输入采样率         , inputSampleBits: 16       //输入采样数位 8, 16         , outputSampleRate: config.sampleRate    //输出采样率         , outputSampleBits: config.sampleBits       //输出采样数位 8, 16         , input: function (data) {             this.buffer.push(new Float32Array(data));                         this.size += data.length;         }         , compress: function () { //合并压缩             //合并             var data = new Float32Array(this.size);                         var offset = 0;                         for (var i = 0; i < this.buffer.length; i++) {                 data.set(this.buffer[i], offset);                 offset += this.buffer[i].length;             }                         //压缩             var compression = parseInt(this.inputSampleRate / this.outputSampleRate);                         var length = data.length / compression;                         var result = new Float32Array(length);                         var index = 0, j = 0;                         while (index < length) {                 result[index] = data[j];                 j += compression;                 index++;             }                         return result;         }         , encodeWAV: function () {             var sampleRate = Math.min(this.inputSampleRate, this.outputSampleRate);                         、var sampleBits = Math.min(this.inputSampleBits, this.outputSampleBits);                         var bytes = this.compress();                         var dataLength = bytes.length * (sampleBits / 8);                         var buffer = new ArrayBuffer(44 + dataLength);                         var data = new DataView(buffer);                         var channelCount = 1;//单声道             var offset = 0;                         var writeString = function (str) {                 for (var i = 0; i < str.length; i++) {                     data.setUint8(offset + i, str.charCodeAt(i));                 }             }                         // 资源交换文件标识符             writeString('RIFF'); offset += 4;                         // 下个地址开始到文件尾总字节数,即文件大小-8             data.setUint32(offset, 36 + dataLength, true); offset += 4;                         // WAV文件标志             writeString('WAVE'); offset += 4;                         // 波形格式标志             writeString('fmt '); offset += 4;                         // 过滤字节,一般为 0x10 = 16             data.setUint32(offset, 16, true); offset += 4;                         // 格式类别 (PCM形式采样数据)             data.setUint16(offset, 1, true); offset += 2;                         // 通道数             data.setUint16(offset, channelCount, true); offset += 2;                         // 采样率,每秒样本数,表示每个通道的播放速度             data.setUint32(offset, sampleRate, true); offset += 4;                         // 波形数据传输率 (每秒平均字节数) 单声道×每秒数据位数×每样本数据位/8             data.setUint32(offset, channelCount * sampleRate * (sampleBits / 8), true); offset += 4;                         // 快数据调整数 采样一次占用字节数 单声道×每样本的数据位数/8             data.setUint16(offset, channelCount * (sampleBits / 8), true); offset += 2;                         // 每样本数据位数             data.setUint16(offset, sampleBits, true); offset += 2;                         // 数据标识符             writeString('data'); offset += 4;                         // 采样数据总数,即数据总大小-44             data.setUint32(offset, dataLength, true); offset += 4;                         // 写入采样数据             if (sampleBits === 8) {                             for (var i = 0; i < bytes.length; i++, offset++) {                                 var s = Math.max(-1, Math.min(1, bytes[i]));                                 var val = s < 0 ? s * 0x8000 : s * 0x7FFF;                     val = parseInt(255 / (65535 / (val + 32768)));                     data.setInt8(offset, val, true);                 }             } else {                             for (var i = 0; i < bytes.length; i++, offset += 2) {                                 var s = Math.max(-1, Math.min(1, bytes[i]));                                          data.setInt16(offset, s < 0 ? s * 0x8000 : s * 0x7FFF, true);                 }             }            return new Blob([data], { type: 'audio/mp3' });         }     };         //开始录音     this.start = function () {         audioInput.connect(recorder);         recorder.connect(context.destination);     }         //停止     this.stop = function () {         recorder.disconnect();     }         //获取音频文件     this.getBlob = function () {         this.stop();                 return audioData.encodeWAV();     }         //上传     this.upload = function (url, callback) {         var fd = new FormData();         fd.append("audioData", this.getBlob());                 var xhr = new XMLHttpRequest();                 if (callback) {             xhr.upload.addEventListener("progress", function (e) {                 callback('uploading', e);             }, false);             xhr.addEventListener("load", function (e) {                 callback('ok', e);             }, false);             xhr.addEventListener("error", function (e) {                 callback('error', e);             }, false);             xhr.addEventListener("abort", function (e) {                 callback('cancel', e);             }, false);         }         xhr.open("POST", url);         xhr.send(fd);     }    //音频采集     recorder.onaudioprocess = function (e) {         audioData.input(e.inputBuffer.getChannelData(0));                 //record(e.inputBuffer.getChannelData(0));     }  };//抛出异常// HZRecorder.throwError = function (message) { //     alert(message); //     throw new function () { this.toString = function () { return message; } } // } //是否支持录音HZRecorder.canRecording = (navigator.getUserMedia != null); //获取录音机 HZRecorder.get = function (callback, config) {     if (callback) {             if (navigator.getUserMedia) {             navigator.getUserMedia(                 { audio: true } //只启用音频                 , function (stream) {                     var rec = new HZRecorder(stream, config);                     callback(rec);                 }                 , function (error) {                     switch (error.code || error.name) {                                             case 'PERMISSION_DENIED':                                             case 'PermissionDeniedError':                             HZRecorder.throwError('用户拒绝提供信息。');                                                         break;                                                     case 'NOT_SUPPORTED_ERROR':                                                     case 'NotSupportedError':                             HZRecorder.throwError('浏览器不支持硬件设备。');                                                         break;                                                     case 'MANDATORY_UNSATISFIED_ERROR':                                                     case 'MandatoryUnsatisfiedError':                             HZRecorder.throwError('无法发现指定的硬件设备。');                                                         break;                        default:                             HZRecorder.throwError('无法打开麦克风。异常信息:' + (error.code || error.name));                                                         break;                     }                 });         } else {             HZRecorder.throwErr('当前浏览器不支持录音功能。');              return;         }     } };

这些都是通过大神的讲解进行整合后自己摸索出来的，有什么问题可以评论，我们一起解决，谢谢！！！