map()

The map() method is a higher-order function that creates a new array by applying a callback function to each element of an existing array.

Example

const numbers: number[] = [ 1, 2, 3, 4, 5 ];

const doubledNumbers = numbers.map( ( number ) => number * 2 );

console.log( doubledNumbers ); // Output: [2, 4, 6, 8, 10]

• map() iterates over each element in numbers.

• The callback function (number * 2) doubles each value.

• The result is stored in doubledNumbers, without modifying the original array.