微信小程序开发readdirSync报indexOf错误

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补充:微信readdirSync报indexOf错误
展开:以下是代码块，不知何原因总是报indexOfundefined好长时间了，求解，谢谢啦downloadlist:function(options){var_this=thisvarFileSystemManager=wxgetFileSystemManager();声明文件管理器varpaths=wxenvUSER_DATA_PATH;try{vardownloadlist=FileSystemManagerreaddirSync(paths)if(downloadlistlength=1){if(downloadlistlength==1&&downloadlist[0]==miniprogramLog){_thissetData({hidden:true,load:false})}else{varnewFilenameArr=[]for(vari=0;i<downloadlistlength;i++){varfilename=downloadlist[i]varextensionarr=filenamesplit();varfilenamearr=extensionarr[0]split(_);switch(filenamearr[0]){caselevel1:varlevel=预备级上;break;caselevel2:varlevel=预备级下;break;caselevel3:varlevel=一级上;break;caselevel4:varlevel=一级下;break;caselevel5:varlevel=二级上;break;caselevel6:varlevel=二级下;break;caselevel7:varlevel=三级上;break;caselevel8:varlevel=三级下;break;}varfilename=filenamearr[0]+_+filenamearr[1]+_+filenamearr[2]++extensionarr[1]varidsting=filenamearr[0]+_+filenamearr[1]+_+filenamearr[2]if(filenamearr[0]&&filenamearr[1]&&filenamearr[2]&&filenamearr[0]!==miniprogramLog&&filenamearr[1]!==miniprogramLog&&filenamearr[2]!==miniprogramLog){varnewarray={level:level,unit:filenamearr[1],part:filenamearr[2],filePath:wxenvUSER_DATA_PATH++filenamearr[0]+_+filenamearr[1]+_+filenamearr[2]++extensionarr[1],idsting:idsting,isTouchMove:false默认隐藏删除}newFilenameArr[i]=newarray}}_thissetData({downloadlistarr:newFilenameArr,load:false})}}else{_thissetData({hidden:true,load:false})}}catch(e){consolelog(e)}},即速小程序：https:developersweixinqqcomcommunitydevelopdoc00026ee709cbb0cc3667eab1856400?highLine=readdirSync
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