JS在for中使用push并应用toUpperCase

Question

//我需要为

var name = ["Jhon", "Anne", "Ewreck", "Nine"];
for( var i = 0 ; i < name.length ; i++ ){
name[i].push(name[i].toUpperCase());
console.log(name[i]);
}

Answer 1

试试这个

let name = ["Jhon", "Anne", "Ewreck", "Nine"];
let nameUpper = name.map( x => x.toUpperCase() )
console.log(nameUpper);