node.js中抓取utf-8编码的网页为什么也是乱码

Question

抓取这个网页http://www.runoob.com/nodejs/...出现乱码，网页编码为utf-8，用过iconv-lite还是不行，这是为什么？var http=require("http");var go=require("iconv-lite") http.get("http://www.runoob.com/nodejs/nodejs-tutorial.html",function(res){    var html="";     res.on("data",function(data){       /* html +=go.decode(data,"gb2312");*/         html+=data;     })     res.on("end",function(){        console.log(html);     }).on("error",function(){        console.log("获取失败")     }) })