# JavaScript Array Reference

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## Array Object

The Array object is used to store multiple values in a single variable:

var cars = ["Saab", "Volvo", "BMW"];

Array indexes are zero-based: The first element in the array is 0, the second is 1, and so on.

For a tutorial about Arrays, read our JavaScript Array Tutorial.

## Array Properties

Property | Description
--- | ---
constructor | Returns the function that created the Array object's prototype
length | Sets or returns the number of elements in an array
prototype | Allows you to add properties and methods to an Array object

## Array Methods

Method | Description
--- | ---
concat() | Joins two or more arrays, and returns a copy of the joined arrays
indexOf() | Search the array for an element and returns its position
join() | Joins all elements of an array into a string
lastIndexOf() | Search the array for an element, starting at the end, and returns its position
pop() | Removes the last element of an array, and returns that element
push() | Adds new elements to the end of an array, and returns the new length
reverse() | Reverses the order of the elements in an array
shift() | Removes the first element of an array, and returns that element
slice() | Selects a part of an array, and returns the new array
sort() | Sorts the elements of an array
splice() | Adds/Removes elements from an array
toString() | Converts an array to a string, and returns the result
unshift() | Adds new elements to the beginning of an array, and returns the new length
valueOf() | Returns the primitive value of an array

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