JavaScript Object.fromEntries()

fromEntries() Syntax

The syntax of the fromEntries() method is:

Object.fromEntries(iterable)

Here, fromEntries() is a static method. Hence, we need to access the method using the class name, Object.

fromEntries() Parameters

The fromEntries() method takes in:

• iterable - an iterable such as an Array or a Map or any other object implementing the iterable protocol.

fromEntries() Return Value

The fromEntries() method returns:

• a new object whose properties are given by the entries of the iterable.

Example: JavaScript Object.fromEntries()

Output

{ firstName: 'John', lastName: 'Doe' }
{ '0': 'x', '1': 'y', '2': 'z' }

In the above example, we have first created the entries array, which consists of two key-value pairs: ["firstName", "John"] and ["lastName", "Doe"].

We then used the Object.fromEntries() method to convert the entries array into an object possessing the key-value pairs specified in the array.

const obj = Object.fromEntries(entries); 

The output indicates that the arrays have been converted to their respective objects.

Then, we repeated the same process with the arr array.

Recommended Reading:

• JavaScript Object.entries()