Question

How to pass arguments to an inline anonymous function (callback) in JavaScript

Answer 1

const arr = [1, 2, 3];

const doubled_arr = arr.map(function(n) {
  return n * 2;
});

// .map() takes a callback function and runs it once for every element in the array.

// The callback function
// function(n) {
//    return n * 2;
// }

// .map() collects all returned values into a new array: doubled_arr

console.log(doubled_arr)



/*
run:

[ 2, 4, 6 ]

*/

 

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