Tell us what’s happening:
i really don’t understand why we put all of the function inside a parentheses than we call the function with an empty parentheses ???
Your code so far
const increment = (function() {
"use strict";
return function increment(number , value) {
return number + value;
};
})();
console.log(increment(5, 2)); // returns 7
console.log(increment(5)); // returns NaN
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.
Link to the challenge:
https://learn.freecodecamp.org/javascript-algorithms-and-data-structures/es6/set-default-parameters-for-your-functions