创建一个http服务并调用

serve/api.js

var http = require('http');

var Server = http.createServer();

Server.on('request',function(request,response){
  response.setHeader("Access-Control-Allow-Origin", "*");
  response.setHeader("Access-Control-Allow-Methods", "POST, GET, PUT, OPTIONS, DELETE");

  request.on('data',(buff)=>{
    request.body = JSON.parse(buff.toString());
  })

  request.on('end', ()=>{
    console.log(request.body)
    //数据处理
    switch(request.url){
      case '/name': response.end(JSON.stringify({ code: 200, method: 'name', data: [] })); break;
      case '/login': response.end(JSON.stringify({ code: 200, method: 'login', data: [] })); break;
      case '/': response.end(JSON.stringify({code: 200}))
    }
  })
});

Server.listen('1000',function(){
  console.log('服务已启动');
});

终端

>node serve/api.js
服务已启动

page/index.js

function request(api, params) {
    return new Promise((resolve, reject)=>{
        var xhttp = new XMLHttpRequest();
        xhttp.onreadystatechange = function() {
            if (this.readyState == 4 && this.status == 200) {
                const res = JSON.parse(this.responseText)
                resolve(res)
            }
        };
        xhttp.open("post", `http://localhost:1000${api}`, true);
        let data = JSON.stringify(params||{})
        xhttp.send(data);
    })
} 
request('/name', {name: '小明'}).then(res=>{
    console.log(res)
})

node每次修改后都要重启

可全局下载nodemon

npm install nodemon- g

使用时：

nodemon api.js