var express =require(‘express‘); var app=express(); app.get(‘/‘,function(req,res){ res.send(‘Hello wold‘); }); var server =app.listen(3000,function(){ var host=server.address().address; var port=server.address().port; console.log(‘3000端口已经开启‘) });
原文：https://www.cnblogs.com/hack-ing/p/12111558.html