Message from JavaScript discussions

September 2020

β€” (native code) means (don't put your nose) orπŸ˜… i can't see what you see, binding means additional (native) code will be generated, right.. operations aren't free😫

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β€” 

Callback is mouse.onclick = callback where callback = handler.bind(scope) is bound, might be => in the constructor function..

function Person(age) {
this.age = age;
this.hasAge = () => this.age
//this.hasAge = () => age
}

β€” I think better would be getAge instead of hasAge.. otherwise I would expect boolean value

β€” Exactly

β€” Or if you like functional style:

const person = age => ({ age })
const getAge = person => person.age
const father = person(50)
const fatherAge = getAge(father)

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β€” Const const const const 🀀

β€” Yes.. a good brick wall is better than a v-shaped mess

β€” If you have now an array of persons.. how do you retrieve their age?
in OOP style:

persons.map(person => person.getAge())


in FP Style:
persons.map(getAge)

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β€” ScatteredπŸ˜‘

β€” Expressive, I would say 🧐

β€” Could it be that the code generates a situation, where age is the same for each person? so where ever I change age it will be the identical value, while

myFather.name= "John"; myMother.name="Jane";

stay disjunct properties?

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β€” Unlikely