Functional programming with arrays Although JavaScript’s arrays are very capable out of the box, the functional paradigm improves the clarity and maintainability of array code.

There are new array methods in JavaScript and they are here to make our programs more predictable and maintainable.

Different ways to extract data from complex arrays using different methods. The watchList array holds objects with information on several movies. Use map on watchList to assign a new array of objects ...

2) .map () Definition A method that populates a new array with results from a function called on every element in the original array. If you are not returning values or using the newly created array ...

Javascript reduce method parameters The reduce method accepts two arguments: a reducer function for the array that is used as a callback, and an optional initialValue argument.

I'm writing a Javascript to validate a form. The form is created dynamically and has a grid of dropdown menus, in a square.(3x3 or 5x5, for now) I want to create a loop that will go through each ...