特效描述：html5 mp3音频播放 网页在线录音。本地设置麦克风权限，才能正常预览

代码结构

1. 引入JS

2. HTML代码

Html5网页JavaScript录制MP3音频

录制

停止

上传

调试信息：

var recorder = new MP3Recorder({

debug:true,

funOk: function () {

btnStart.disabled = false;

log('初始化成功');

},

funCancel: function (msg) {

log(msg);

recorder = null;

}

});

var mp3Blob;

function funStart(button) {

btnStart.disabled = true;

btnStop.disabled = false;

btnUpload.disabled = true;

log('录音开始...');

recorder.start();

}

function funStop(button) {

recorder.stop();

btnStart.disabled = false;

btnStop.disabled = true;

btnUpload.disabled = false;

log('录音结束，MP3导出中...');

recorder.getMp3Blob(function (blob) {

log('MP3导出成功');

mp3Blob = blob;

var url = URL.createObjectURL(mp3Blob);

var div = document.createElement('div');

var au = document.createElement('audio');

var hf = document.createElement('a');

au.controls = true;

au.src = url;

hf.href = url;

hf.download = new Date().toISOString() + '.mp3';

hf.innerHTML = hf.download;

div.appendChild(au);

div.appendChild(hf);

recordingslist.appendChild(div);

});

}

function log(str) {

recordingslist.innerHTML += str + '
';

}

function funUpload() {

var fd = new FormData();

var mp3Name = encodeURIComponent('audio_recording_' + new Date().getTime() + '.mp3');

fd.append('mp3Name', mp3Name);

fd.append('file', mp3Blob);

var xhr = new XMLHttpRequest();

xhr.onreadystatechange = function () {

if (xhr.readyState == 4 && xhr.status == 200) {

recordingslist.innerHTML += '上传成功：' + mp3Name + '';

}

};

xhr.open('POST', 'upload.ashx');

xhr.send(fd);

}