Array's map method takes a function as an argument . This function has 1 required parameter which is the array's current iteration element's value . What are the other 2 optional parameters to this function ?
The other 2 optional parameters to this function are :
1. index - The array index of the current iteration element.
2. array - The array itself.
Code example :
let arr = [1,2,3];
newArr = arr.map((currentElemValue, currentElemIndex, arr) = > {
console.log(currentElemValue , currentElemIndex, arr);
})