removeArrayElements.js

/**
 * removeArrayElements.js
 * tags: { JavaScript, Array }
 * Removes elements from an array for which the given function returns false.
 * Use Array.prototype.filter() to find array elements that return truthy 
 * values and Array.prototype.reduce() to remove elements using 
 * Array.prototype.splice(). The func is invoked with three 
 * arguments (value, index, array).
 */

const remove = (arr, fn) => {
  return arr
          .filter(fn)
          .reduce( (acc, val) => {
              arr.splice( arr.indexOf(val), 1 );
              return acc.concat(val);
            }, []
          );
};

console.log(
  remove([1, 2, 3, 4], n => n % 2 === 0) // [2, 4]
);

removeArrayElements.js

tags: { JavaScript, Array }
Removes elements from an array for which the given function returns false.
Use Array.prototype.filter() to find array elements that return truthy
values and Array.prototype.reduce() to remove elements using
Array.prototype.splice(). The fn is invoked with three
arguments (value, index, array).