Fait

Controller/ApiController.js

@@ -7,4 +7,8 @@ module.exports = class ApiController {
 	all(req, res) {
 		res.send(this.db.getAll())
 	}
+
+	single(req, res) {
+		res.send(this.db.getByID(req.query.id))
+	}
 }

test.js

@@ -0,0 +1,19 @@
+this.test = 'pouet'
+
+console.log(this.test) // retourne 'pouet'
+
+const fn2 = function() {
+	console.log(this.test)  // retourne undefined
+	this.pokemon = 'go'
+}
+fn2()
+
+console.log(this.pokemon)
+
+const fn = () => {
+	console.log(this.test) // retourne 'pouet'
+	this.pokemon = 'go'
+}
+fn()
+
+console.log(this.pokemon)