爬取地图列表并下载-node.js

var fs = require('fs');
var request = require('request');
var cheerio = require('cheerio');
var url = 'https://github.com/ecomfe/echarts/tree/master/map/js/province/'
try{
        request(url,(error,response,data)=>{
                $ = cheerio.load(data);
                let arr = [];
                for(let i=0;i<$('div.file-wrap td.content a.js-navigation-open').length;i++){
                    let file = $('div.file-wrap td.content a.js-navigation-open')[i].attribs.title;
                    request(`http://echarts.baidu.com/examples/vendors/echarts/map/js/province/${file}?_v_=1519819816100`).pipe(fs.createWriteStream(`./map/${file}`))
                }
        })
}catch(error){
    console.log(error)
}