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JavaScript Array entries() Method

Last Updated : 15 Jul, 2024
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The entries() method in JavaScript is used to create an iterator that returns key/value pairs for each index in the array.

It allows iterating over arrays and accessing both the index and value of each element sequentially.

Syntax:

array.entries()

Parameters:

  • This method does not accept any parameters.

Return value:

  • Returns an array of indexes and values of the given array on which the Array.entries() method is going to work. 

Example 1: Iterating Array Entries in JavaScript

The code initializes an array languages and creates an iterator g using the entries() method. It then iterates over each key/value pair in the iterator using a for...of loop, logging each pair along with the string "geeks" to the console.


Output
geeks [ 0, 'HTML' ]
geeks [ 1, 'CSS' ]
geeks [ 2, 'JavaScript' ]
geeks [ 3, 'ReactJS' ]

Example 2: Iterating Over Array Entries in JavaScript

The code initializes an array fruits_names containing fruit names. It then creates an iterator fruits_array_iterator using the entries() method. Two calls to next().value are made on the iterator, logging the key/value pairs (index and corresponding element) to the console.


Output
[ 0, 'apple' ]
[ 1, 'banana' ]

We have a complete list of Javascript Array methods, to check those please go through this Javascript Array Complete reference article.

Supported Browsers:

The browsers supported by the JavaScript Array entries() method are listed below:

  • Google Chrome 38.0
  • Microsoft Edge 12.0
  • Mozilla Firefox 28.0
  • Safari 8.0
  • Opera 25.0

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