webupload beforeFileQueued 返回值问题 太纠结了

Question

        uploader.on('beforeFileQueued', function (file) {
         WebUploader.Runtime.Html5.Util.parseMeta(file.source, function (error, ret) {
                var  lat = ret.exif.get(0x0002);
                var lon = ret.exif.get(0x0004);
                if (lat !== undefined && lon !== undefined) {
                    return false;
                }
            });
            console.log(lat);

Answer 1

function dosomething(lat,lon){
 console.log(lat,lon)
}

function someerror(err) {
 console.log(err)
}
    
    uploader.on('beforeFileQueued', function (file) {
             WebUploader.Runtime.Html5.Util.parseMeta(file.source, function (error, ret) {
                    var  lat = ret.exif.get(0x0002);
                    var lon = ret.exif.get(0x0004);
                    if (lat !== undefined && lon !== undefined) {
                        dosomething(lat,lon)
                    } else {
                     someerror('cuocuocuocuocuo')
                     }
                });