Cómo convertir la matriz en mayúsculas en JavaScript
var a = ['this','is','test'];
a.map(f=>{ return f.toUpperCase(); });
Defiant Dogfish
var a = ['this','is','test'];
a.map(f=>{ return f.toUpperCase(); });var fruits = ["Banana", "Orange", "Apple", "Mango"];
undefined
string = fruits.join(' ').toUpperCase();
// Output"BANANA ORANGE APPLE MANGO"