node.js 简易爬虫

let https = require("https");

let fs = require("fs")

https.get("https://www.taobao.com/",res => {

    res.setEncoding("utf-8")

    let html;

    res.on("data",chunk => {

        html += chunk;

    })

    res.on("end",() => {

        fs.writeFile("./index.txt",html,(err) => {

            if(err) throw err;

            console.log("err",err);  

        })

    })

})