Methods that accesses and returns some representation of the array. concat: Returns a new array with the combination of this array and other array / values.; includes: returns a true if the value is ...

The Array Object in JavaScript has a built-in reduce method that iterates over each value in an array and returns a value. It is very useful when calculating sums. Write a function that takes an array ...

Array elements are inherently sparse where elements can be added at noncontiguous locations. Object properties can be dynamically accessed and they can also store values of different types. Existing ...