[英]Node JS returning undefined for an API call
我正在使用开放式天气API,对于风速,它返回的是未定义的,但是其他两个(时间和温度)都可以正常工作。
var request = require('request');
var yargs = require('yargs');
var fs = require ('fs');
var forecasts = require('./forecast.json');
var args = yargs.argv;
var url = 'http://api.openweathermap.org/data/2.5/forecast?q=erie,pa&APPID=a0472e6063198c88952f86f836355ae1&units=imperial';
request({url: url, json: true},function(error,response,body){
var time = 0;
body.list.forEach(function(measurement){
var forecast = {Wind_Speed: measurement.main.wind, time: time, temp: measurement.main.temp};
forecasts.push(forecast);
time = time + 3
console.log(forecast)
})
fs.writeFile('forecast.json',JSON.stringify(forecasts))
})
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