Javascript Array entries()

entries() Syntax

The syntax of the entries() method is:

arr.entries()

Here, arr is an array.

entries() Parameters

The entries() method does not take any parameters.

entries() Return Value

• Returns a new Array iterator object.

Note: The entries() method does not change the original array.

Example 1: Using entries() Method

Output

[ 0, 'Java' ]
[ 1, 'C' ]
[ 2, 'C++' ]
[ 3, 'Python' ]

In the above example, we have used the entries() method to get an Array iterator object of the key/value pair of each index in the language array.

We have then looped through iterator that prints the key/value pairs of each index.

Example 2: Using next() Method in Array Iterator Object

Array Iterator object has a built-in method called next() which is used to get the next value in the object.

Instead of looping through the iterator, we can get the key/value pairs using next().value. For example:

Output

[ 0, '#' ]
[ 1, '$' ]
[ 2, '*' ]

Recommended Reading: JavaScript Array keys()