text: const request = require("request");
  
  request('https://www.baidu.com', function (error, response) {
    if (!error && response.statusCode == 200) {
      console.log('get times 1');
  
      request('https://www.baidu.com', function(error, response) {
        if (!error && response.statusCode == 200) {
          console.log('get times 2');
  
          request('https://www.baidu.com', function(error, response) {
            if (!error && response.statusCode == 200) {
              console.log('get times 3');
            }
          })
        }
      })
    }
  });