convertir una matriz a mayúsculas o minúsculas js
var fruits = ["Banana", "Orange", "Apple", "Mango"];
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string = fruits.join(' ').toUpperCase();
// Output"BANANA ORANGE APPLE MANGO"
javascript sacar provecho de la matriz de
const names = ['Ali', 'Atta', 'Alex', 'John'];
const uppercased = names.map(name => name.toUpperCase());
console.log(uppercased);
// ['ALI', 'ATTA', 'ALEX', 'JOHN']