Edit fiddle - JSFiddle - React, Tailwind, and code Playground

JSFiddle - React, Tailwind, and code Playground

JavaScript

function aggiungi(somma){
    return this + somma;
}

console.log(aggiungi.call(10, 10) ===20);

// primo parametro che gli passo è il this, gli altri sono i parametri per valorizzare la funzione, perciò se aggiungi avesse due parametri in entrata nell'invocazione con call dovrò passare tre valori nella parentesi perchè il primo equivale al this

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JSFiddle - React, Tailwind, and code Playground

JavaScript

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