けんき says to YSITD$ cat a.js module.exports = {y:100}; $ cat b.js var a = require('./a'); module.exports = function(){a.y=5;} $ cat c.js var a = require('./a') module.exports = function(){console.log(a.y);} $ cat d.js var b = require('./b') var c = require('./c') b(); c(); $ node d.js 5at Fri, Jun 10, 2016 1:38 AM