光学完没有，成果拿出来才有人信服！写一个小demo证明我学会了node基础~

package.json:

{
  "name": "node-weather12311",
  "version": "1.0.2",
  "description": "这是一简易的天气查询工具",
  "main": "index.js",
  "bin":{
    "weather":"./index.js"
    },
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "repository": {
    "type": "git",
    "url": "git+https://github.com/HARRISKING/node-weather.git"
  },
  "keywords": [
    "weather"
  ],
  "author": "HARRISKING",
  "license": "ISC",
  "bugs": {
    "url": "https://github.com/HARRISKING/node-weather/issues"
  },
  "homepage": "https://github.com/HARRISKING/node-weather#readme",
  "dependencies": {
    "axios": "^0.16.1"
  }
}

index.js:

#!/usr/bin/env node

var axios = require('axios');
// console.log(process.argv);

var data = {};
if(process.argv[2]){
  data.params = {
    city: process.argv[2]
  }
}
axios.get('http://api.jirengu.com/weather.php',data)
.then(function(response){
  console.log('日期：'+response.data.results[0].weather_data[0].date)
  console.log('天气：'+response.data.results[0].weather_data[0].weather)
  console.log('风力：'+response.data.results[0].weather_data[0].wind)
  console.log('气温：'+response.data.results[0].weather_data[0].temperature)
  console.log('pm2.5：'+response.data.results[0].pm25)

}).catch(function(error){
  console.log('哎呀，出错了。。。')
})

结果：

这样，在下载之后，就可在通过输入“weather”查询此时当地的天气情况；
输入“weather + 地名”可以查询地名所在的天气状况。

成功！