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）

百变鹏仔 2个月前 (10-18) #H5教程

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本篇文章给大家带来的内容是关于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），有一定的参考价值，有需要的朋友可以参考一下，希望对你有所帮助。

以下是实现功能实例：
html

<!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(&#39;microphone&#39;);            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 &#39;uploading&#39;:                                                //var percentComplete = Math.round(e.loaded * 100 / e.total) + &#39;%&#39;;                            break;                                                    case &#39;ok&#39;:                                                        //alert(e.target.responseText);                            alert("上传成功");                                                        break;                                                    case &#39;error&#39;:                            alert("上传失败");                                                        break;                                                    case &#39;cancel&#39;:                            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(&#39;RIFF&#39;); 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(&#39;WAVE&#39;); offset += 4;                        // 波形格式标志            writeString(&#39;fmt &#39;); 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(&#39;data&#39;); 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: &#39;audio/mp3&#39; });        }    };        //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(&#39;uploading&#39;, e);            }, false);            xhr.addEventListener("load", function (e) {                callback(&#39;ok&#39;, e);            }, false);            xhr.addEventListener("error", function (e) {                callback(&#39;error&#39;, e);            }, false);            xhr.addEventListener("abort", function (e) {                callback(&#39;cancel&#39;, 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 &#39;PERMISSION_DENIED&#39;:                                            case &#39;PermissionDeniedError&#39;:                            HZRecorder.throwError(&#39;用户拒绝提供信息。&#39;);                                                        break;                                                    case &#39;NOT_SUPPORTED_ERROR&#39;:                                                    case &#39;NotSupportedError&#39;:                            HZRecorder.throwError(&#39;浏览器不支持硬件设备。&#39;);                                                        break;                                                    case &#39;MANDATORY_UNSATISFIED_ERROR&#39;:                                                    case &#39;MandatoryUnsatisfiedError&#39;:                            HZRecorder.throwError(&#39;无法发现指定的硬件设备。&#39;);                                                        break;                        default:                            HZRecorder.throwError(&#39;无法打开麦克风。异常信息:&#39; + (error.code || error.name));                                                        break;                    }                });        } else {            HZRecorder.throwErr(&#39;当前浏览器不支持录音功能。&#39;);             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！！！

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