.forEach()
What is it?
This method is the most similar to the forloop. Example -
// forloop const numbers = [2,6,8,10,12]; for (let i = 0; i < numbers.length; i++) { console.log(numbers[i]); } // forEach const numbers = [2,6,8,10,12]; numbers.forEach(number => { console.log(number); }); forEach() is simply executed "for each" element of the array.
.map()
What is it?
map is almost similar to the forEach method. This method loops through each element.
// map const numbers = [2,6,8,10,12]; numbers.map(number =>console.log(number)) // map const numbers = [2,6,8,10,12]; numbers.map(number =>console.log(number * 2)) map vs. forEach:
forEach:
It calls a function for each element of an array but doesn't return anything. That means no result fount means undefined
const numbers = [2,6,8,10,12]; let result = numbers.forEach((number) =>{ return number*10 }) console.log(result); //undefined map:
This method returns a new array by applying the callback function on each element of an array.
// map const numbers = [2,6,8,10,12]; let result = numbers.map((number) =>{ return number*10 }) console.log(result); //[20,60,80,100,120] 
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