Learn JavaScript's Array Reduce method in 100 seconds. Take many things and reduce them down to one thing. In just 100 ...

JavaScript’s arrays can hold heterogeneous types, change size on the fly, and readily insert or remove elements. Traditional methods like slice, splice, and push/pop do this by operating on the ...

SORT()’s array argument is the entire FILTER() function. The sort_index value of 2 sorts by the Value column, the second column in array. The sort_index value is -1, which applies a descending sort.

In JavaScript, we use the filter method to filter items stored in an array using a callback. We use the map method to create a new array using the old array using the logic passed inside a callback.