Because the page where I want to insert the following line of code, how can I replace the arrow function so that I can run in the ES5 version?
const frutas = ["Banana", "Orange", "Apple", "Mango","Orange"];
const contarFrutas = (valor, listaDeFrutas) => (
listaDeFrutas.filter(fruta => fruta === valor).length
);
console.log(
contarFrutas('Banana', frutas)
);
console.log(
contarFrutas('Orange', frutas)
);
Although that's fine, the substitution would really be:
function contarFrutas(valor, listaDeFrutas) {
return listaDeFrutas.filter(function (fruta) {
return fruta === valor;
}).length;
};
Since it is not necessary to assign the function to a variable, simply simply declare the function without more.
And you would call her as they have put you in the other comment:
console.log(contarFrutas('Banana', frutas));
console.log(contarFrutas('Orange', frutas));
I leave it as executable so you can review it
"use strict";
var frutas = ["Banana", "Orange", "Apple", "Mango", "Orange"];
var contarFrutas = function contarFrutas(valor, listaDeFrutas) {
return listaDeFrutas.filter(function (fruta) {
return fruta === valor;
}).length;
};
console.log(contarFrutas('Banana', frutas));
console.log(contarFrutas('Orange', frutas));If you mention the ES5 standard, pass the declaration of variables to the type
var, likewise the declaration of the arrow functions was passed to > the declaration of habitual functions