手机型号：华为mate30pro， 微信版本8.0.6，基础库版本：2.17.0 问题描述：使用InnerAudioContext进行音频播放，再用playbackRate实现播放倍速调整，但真机效果异常，具体如下： 1、直接设置innerAudioContext.playbackRate = 2，真机预览无效果。 2、调整innerAudioContext.playbackRate，然后innerAudioContext.pause()，再innerAudioContext.play()。 效果：第1次调整playbackRate，发现音频会从头播放，第2+次调整则正常（不会从头开始播放） 3、在音频播放前设置playbackRate，无效 代码片段地址：https://developers.weixin.qq.com/s/5f8DtOmp7lqt

操作方式： 微信内直接打开H5页面：http://man.39.net/slbp/share.html 右上角->分享给朋友，然后选择群。 则出现以下提示：操作过于频繁，可稍候再试。 [图片] 页面代码如下： [代码]var[代码] [代码]api39_wx = [代码][代码]function[代码][代码](config) {[代码][代码]            [代码][代码]if[代码] [代码](navigator.userAgent.match(/MicroMessenger/i)) {[代码][代码]                [代码][代码]$.ajax({[代码][代码]                    [代码][代码]tyep: [代码][代码]"get"[代码][代码],[代码][代码]                    [代码][代码]url: [代码][代码]"http://xxxxxxxxxx/GetConfigParameter"[代码][代码],[代码][代码]                    [代码][代码]dataType: [代码][代码]"jsonp"[代码][代码],[代码][代码]                    [代码][代码]jsonp: [代码][代码]"jsoncallback"[代码][代码],[代码][代码]                    [代码][代码]data: {[代码][代码]                        [代码][代码]urlback: encodeURIComponent(location.href.split([代码][代码]"#"[代码][代码])[0])[代码][代码]                    [代码][代码]},[代码][代码]                    [代码][代码]success: [代码][代码]function[代码][代码](data) {[代码][代码]                        [代码][代码]wx.config({[代码][代码]                            [代码][代码]debug: [代码][代码]false[代码][代码],[代码][代码]                            [代码][代码]appId: data.strappid,[代码][代码]                            [代码][代码]timestamp: data.strtimestamp,[代码][代码]                            [代码][代码]nonceStr: data.strnoncestr,[代码][代码]                            [代码][代码]signature: data.strsignature,[代码][代码]                            [代码][代码]jsApiList: [[代码][代码]"onMenuShareTimeline"[代码][代码], [代码][代码]"onMenuShareAppMessage"[代码][代码], [代码][代码]"onMenuShareQQ"[代码][代码], [代码][代码]"onMenuShareQZone"[代码][代码]][代码][代码]                        [代码][代码]});[代码][代码]                        [代码][代码]wx.ready([代码][代码]function[代码][代码]() {[代码][代码]                            [代码][代码]if[代码][代码](wx.onMenuShareAppMessage) {[代码][代码]                                [代码][代码]wx.onMenuShareAppMessage(config);[代码][代码]                                [代码][代码]wx.onMenuShareQQ(config);[代码][代码]                            [代码][代码]}[代码][代码]                            [代码][代码]else[代码] [代码]{[代码][代码]                                [代码][代码]wx.updateTimelineShareData(config,[代码][代码]function[代码][代码](res){[代码][代码]                                [代码][代码]});[代码][代码]                            [代码][代码]}[代码][代码]                            [代码][代码]if[代码][代码](wx.onMenuShareTimeline) {[代码][代码]                                [代码][代码]wx.onMenuShareTimeline(config);[代码][代码]                                [代码][代码]wx.onMenuShareQZone(config);[代码][代码]                            [代码][代码]}[代码][代码]                            [代码][代码]else[代码] [代码]{[代码][代码]                                [代码][代码]wx.updateAppMessageShareData(config,[代码][代码]function[代码][代码](res){[代码][代码]                                [代码][代码]});[代码][代码]                            [代码][代码]}[代码][代码]                        [代码][代码]});[代码][代码]                    [代码][代码]}[代码][代码]                [代码][代码]})[代码][代码]            [代码][代码]}[代码][代码]        [代码][代码]};[代码][代码]        [代码][代码]var[代码] [代码]wxinfo = [代码][代码]new[代码] [代码]api39_wx({[代码][代码]            [代码][代码]title: [代码][代码]'自定义分享标题出来了'[代码][代码],[代码][代码]            [代码][代码]desc: [代码][代码]'这里是自定义分享的摘要'[代码][代码],[代码][代码]            [代码][代码]link: location.href,[代码][代码]            [代码][代码]imgUrl: [代码][代码]'http://nimage.39.net/wap/m/images/pic/for_weixin.jpg'[代码][代码],[代码][代码]        [代码][代码]});[代码]如果去掉这段代码，则可以分享到群，但分享标题、链接、缩略图均为微信自动获取。