reflexion_example.js

class Foo {
  constructor(){
    this.bar = "Hello!";
  }
}

let foo = new Foo()
console.log(`${foo.bar} == ${foo["bar"]}`)
console.log("----------------------------")

foo.bar = "Good bye"
console.log(`${foo.bar} == ${foo["bar"]}`)
console.log("----------------------------")

foo["bar"] = "See you!"
console.log(`${foo.bar} == ${foo["bar"]}`)
console.log("----------------------------")