您好，我有兩個(gè)api請(qǐng)求可以單獨(dú)工作，但是要讓它們都在我的node.js應(yīng)用程序上工作都遇到了很多麻煩。有沒(méi)有簡(jiǎn)單的方法可以發(fā)出兩個(gè)請(qǐng)求？我嘗試過(guò)提出兩個(gè)請(qǐng)求，將數(shù)據(jù)放入變量中，然后呈現(xiàn)它們兩個(gè)，但是遇到全局變量問(wèn)題。任何幫助，將不勝感激。  request(url, function (err, response, body) {    if(err){      res.render('index', {weather: null, error: 'Error, please try again'});    } else {      let weather = JSON.parse(body);      if(weather.main == undefined){        res.render('index', {weather: null, error: 'Error, please try again'});      } else {        if (rain == "0,rain"){        let weatherText = `It's ${weather.main.temp} degrees celsius and with wind speeds of ${weather.wind.speed} mph in ${weather.name} ${weather.sys.country}! & ${weather.weather[0].description}`  ;        res.render('index', {weather: weatherText, error: null});      }      else{        let weatherText = `It's ${weather.main.temp} degrees celsius and with wind speeds of ${weather.wind.speed} mph in ${weather.name} ${weather.sys.country}!`  ;        res.render('index', {weather: weatherText, error: null});      }      }    }  });request(url2, function (err, response, body) {  if(err){    res.render('index', {news: null, error: 'Error, please try again'});  } else {    let result = JSON.parse(body);    let news = result.articles[0].title    if(news == undefined){      res.render('index', {news: null, error: 'Error, please try again'});    }     else{      res.render('index', {news:news, error: null});    }    }  })