JavaScript＆谷歌api：阵列工作只调试模式

Question

我不明白为什么我的代码只适用于调试模式。我的变量musiques我function createMusicBox()处于调试模式和空物体在没有调试运行

var musiques = []; 

/** 
* Create an OAuth2 client with the given credentials, and then execute the 
* given callback function. 
* 
* @param {Object} credentials The authorization client credentials. 
* @param {function} callback The callback to call with the authorized client. 
*/ 
function authorize(credentials, callback) { 
    var clientSecret = credentials.installed.client_secret; 
    var clientId = credentials.installed.client_id; 
    var redirectUrl = credentials.installed.redirect_uris[0]; 
    var auth = new googleAuth(); 
    var oauth2Client = new auth.OAuth2(clientId, clientSecret, redirectUrl); 

    // Check if we have previously stored a token. 
    fs.readFile(TOKEN_PATH, function(err, token) { 
    if (err) { 
     getNewToken(oauth2Client, callback); 
    } else { 
     oauth2Client.credentials = JSON.parse(token); 
     callback(oauth2Client); 
    } 
    }); 
} 


/** 
* Lists the names and IDs of up to 10 files. 
* 
* @param {google.auth.OAuth2} auth An authorized OAuth2 client. 
*/ 
function listFiles(auth) { 
    var service = google.drive('v3'); 
    service.files.list({ 
    auth: auth, 
    pageSize: 10, 
    fields: "nextPageToken, files(id, name)" 
    }, function(err, response) { 
    if (err) { 
     console.log('The API returned an error: ' + err); 
     return; 
    } 
    var files = response.files; 
    if (files.length == 0) { 
     console.log('No files found.'); 
    } else { 
     musiques=files; 
     console.log('Files:'); 
     for (var i = 0; i < files.length; i++) { 
     musiques[i] = files[i]; 
     var file = files[i]; 
     console.log('%s (%s)', file.name, file.id); 
     } 
    } 
    }); 
} 

// this function pulls music in my google drive 

function createMusicBox() { 

    // Load client secrets from a local file. 
    fs.readFile('client_secret.json', function processClientSecrets(err, content) { 
     if (err) { 
     console.log('Error loading client secret file: ' + err); 
     return; 
     } 
     // Authorize a client with the loaded credentials, then call the Drive API. 
     authorize(JSON.parse(content), listFiles); 
    }); 

    console.log(musiques); 
} 

Answer 1

我找到一个解决方案，我把回调listFiles，现在它完美

function createMusicBox(event) { 
    // Load client secrets from a local file. 
    fs.readFile('client_secret.json', function processClientSecrets(err, content) { 
     if (err) { 
     console.log('Error loading client secret file: ' + err); 
     return; 
     } 
     // Authorize a client with the loaded credentials, then call the Drive API. 
     authorize(JSON.parse(content), listFiles, event); 
    }); 
    } 

function getNewToken(oauth2Client, callback) { 
    var authUrl = oauth2Client.generateAuthUrl({ 
    access_type: 'offline', 
    scope: SCOPES 
    }); 
    console.log('Authorize this app by visiting this url: ', authUrl); 
    var rl = readline.createInterface({ 
    input: process.stdin, 
    output: process.stdout 
    }); 
    rl.question('Enter the code from that page here: ', function(code) { 
    rl.close(); 
    oauth2Client.getToken(code, function(err, token) { 
     if (err) { 
     console.log('Error while trying to retrieve access token', err); 
     return; 
     } 
     oauth2Client.credentials = token; 
     storeToken(token); 
     callback(oauth2Client); 
    }); 
    }); 
} 


function listFiles(auth, callback, event) { 
    var service = google.drive('v3'); 
    service.files.list({ 
    auth: auth, 
    pageSize: 10, 
    fields: "nextPageToken, files(id, name)" 
    }, function(err, response, listMusic) { 
    if (err) { 
     console.log('The API returned an error: ' + err); 
     return; 
    } 
    var files = response.files; 
    if (files.length == 0) { 
     console.log('No files found.'); 
    } else { 
     callback(event, files); 
    } 
    }); 
    }