获得HTML页面

var http = require("http")
var url="https://www.imooc.com/learn/348"

http.get(url,function(res){
    var html = ""

    res.on("data",function(data){
        html += data
    })

    res.on("end",function(){
        console.log(html)
    })
}).on("errer",function(){
    console.log("出错")var http = require("http")
var url="htt