Array Method in ECMAScript 6-map, ecmascriptmap

Array Method in ECMAScript 6-map, ecmascriptmap

Array Method in ECMAScript 6-map

/** Scenario 1 ** assume that there is an array of numbers (a), and the values in the array of prize a are doubled in the form of array B **/let numbers = [1, 2, 4]; var doubleNumbers = []; // es5for (let index = 0; index <numbers. length; index ++) {doubleNumbers. result: [2, 4, 6, 8] console. log (doubleNumbers) // traverses the values in the array for (let index = 0; index <doubleNumbers. length; index ++) {console. log (doubleNumbers [index])} result: 2468

ES6 method:

// Es6 let dable = numbers. map (number) {return number ;}) or: let dable = numbers. map (number) =>{ return number}) console. log (dable)

Result:

[1, 2, 3, 4]

The returned result of a map loop is an array.