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JavaScript Array Object

Array Object

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

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

Array Object 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 object

Array Object Methods

Method Description
concat() Joins two or more arrays, and returns a copy of the joined arrays
indexOf()  
join() Joins all elements of an array into a string
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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