Map Function In Javascript Es6: Web map objects set objects classes promises symbol default parameters function rest parameter string.includes (). Web es6 provides a new collection type called map that addresses these deficiencies. Web the array.map () method allows you to iterate over an array and modify its elements using a callback function.

Map Function In Javascript Es6

Map () does not execute the function for empty. Web es6 provides a new collection type called map that addresses these deficiencies. Web map takes a function so you just need to add the name => and return the value to push to the new array.