demo04.js

const greeting = _name => `hello ${_name}`;module.exports.greeting = greeting;

demo05.js

const a = require('./demo04.js');
console.log(a);
console.log(a.greeting(`geyao`));

运行结果

demo04.js

const greeting = _name => `hello ${_name}`;
const x = 100;
exports.x = x;
module.exports.greeting = greeting;
module.exports = {name: 'zhangsan'
}

demo05.js

const a = require('./demo04.js');
console.log(a);
//console.log(a.greeting(`geyao`));

运行结果