![[Node.js] CommonJS Modules [Node.js] CommonJS Modules](https://image.shishitao.com:8440/aHR0cHM6Ly9ia3FzaW1nLmlrYWZhbi5jb20vdXBsb2FkL2NoYXRncHQtcy5wbmc%2FIQ%3D%3D.png?!?w=700&webp=1)
CoomonJS modules provide a clean syntax for importing dependencies. This lesson will take a look at the basics of using CommonJS modules.
app.js
var dep = require('./dep'); console.log(dep); // Exports a string back
dep.js
module.exports = "Exports a string back";
You can exports anything, such as a function:
app.js
var dep = require('./dep'); console.log(dep()); // Export a function back
dep.js
module.exports = function() {
return "Exports a function back";
}
Exprots multi-value:
app.js
var dep = require('./dep'); console.log(dep.foo, dep.bar); //foo, bar
dep.js
module.exports = {
foo: "foo",
bar: "bar"
}
Normally, you should do like this, using exprots object directly:
dep.js
exports.foo = "foo";
exports.bar = "bar";