process对象!
//console
.log(process)
//console
.log(global
.process)
//console
.log(process
.argv)
//console
.log(process
.env)
//js操作的是浏览器,nodejs操作的是系统,网络.
console
.log(process
.pid)
console
.log(process
.title)
setInterval(function(){
},
5000)