的NodeJS模塊無法從封閉

Question

我正在試圖讓調用API模塊，使用下面的代碼裏面返回的數據：

var key = require('./keys').slack; 
var unirest = require('unirest'); 

module.exports.apiCall = function() { 
    var args = {"token": key, "channel": "C07RLKT6C", "text": "DebugmessagePlsIgnore", "as_user": true}; 

    var req = unirest.post("https://slack.com/api/chat.postMessage"); 

    req.query(args).end(function(res) { 
     // Output res 
    }); 
} 

console.log(this.apiCall()); 

不幸的是，我無法輸出資源的到結果返回。我正在使用Unirest模塊來請求HTTPS數據。

謝謝。

Answer 1

你需要一個回調來管理

var key = require('./keys').slack; 
var unirest = require('unirest'); 

module.exports.apiCall = function(cb) { 
    var args = {"token": key, "channel": "C07RLKT6C", "text": "DebugmessagePlsIgnore", "as_user": true}; 

    var req = unirest.post("https://slack.com/api/chat.postMessage"); 

    req.query(args).end(function(res) { 
     cb(null, res) 
    }); 
} 

this.apiCall(function(err, res) { 
    console.log(res) 
}); 

Answer 2

你需要一個回調。

//module.js 

var key = require('./keys').slack; 
var unirest = require('unirest'); 

module.exports.apiCall = function(callback) { 
    var args = {"token": key, "channel": "C07RLKT6C", "text": "DebugmessagePlsIgnore", "as_user": true}; 

    var req = unirest.post("https://slack.com/api/chat.postMessage"); 

    req.query(args).end(callback); 
} 

// another file 
var apiCall = require('./module'); 

apiCall(function(res) { 
    console.log(res); 
});