Web Reference: Feb 16, 2026 · The Map object holds key-value pairs and remembers the original insertion order of the keys. Any value (both objects and primitive values) may be used as either a key or a value. Description map() creates a new array from calling a function for every array element. map() does not execute the function for empty elements. map() does not change the original array. Jan 7, 2022 · O método Array.map() normalmente é usado para aplicar algumas alterações aos elementos, seja multiplicando-os por um número específico, como no código acima, seja fazendo outras operações que você necessite utilizar em sua aplicação.
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