02-object javascript.txt

//Tipo y el constructor
//<2015->ES5
function Foo(name){
    this.name = name
}
//metodo publico
Foo.prototype.write = function(){
    this._write()
}
//metodo privado
Foo.prototype._write = function(){
    console.log(this.name)
}

Foo.write = function(){
    console.log("static method")
}
>2015->ES6
//azucar sintactico
class Foo{
    constructor(name){
        this.name = name
    }
    _write(){
        console.log(this.name)
    }
    write(){
        this._write()
    }
    static write(){
        console.log("static method")
    }
}

//Transpilacion
/*
    Babel->React,Vue
    TypeScript->Microsoft

*/

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Classes
https://github.com/tc39/ecma262
https://developer.mozilla.org/es/docs/Web/JavaScript/Inheritance_and_the_prototype_chain
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function

function sum(a,b){
    return a+b
}

diferencias null vs undefined