Arrays are use to store ordered collections of data. If we have multiple items, then we can use arrays to store these values. Array prototype methods are used to perform mutation operations in JavaScript. There is no fixed length of an array. An array can contain multiple value types and the number of items can be mutated at any point after initialization.
There are two array types in JavaScript:
Note
Sparse array
In programming languages, a sparse array denotes an array that has the same values such as 0 or null. There is a large number of zeroes in an array storage, which occurs in a sparse array. In a sparse array, indexes do not start from 0. In a sparse array, lengths of the elements are less than the length of the property.
In JavaScript, the length property is not the actual amount...