您不能将参数作为字符串传递给
server.listen
const http = require('http');
const PORT=2000;
const HOST="localhost";
const server = http.createServer((req, res, next) => {
if(req.url == "/about"){
return res.end("<h1> About page</h1>")
}
})
server.listen(PORT, HOST,()=>{
console.log(`server is running on http://${HOST}:${PORT}`)
})