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JavaScript Program to Access Non-Numeric Object Properties by Index

Last Updated : 14 Sep, 2023

In JavaScript, we can access non-numeric object properties by their keys (property names) rather than by index, as objects are not indexed like arrays. Objects use key-value pairs to store data. But there are certain ways to achieve this using the properties of the objects.

Approaches to access non-numeric object by Index in JavaScript

Using Object.keys() method
Using Object.values() method
Using Object.entries() method

Let’s explore the above possible ways to perform the accessing of non-numeric object properties by index.

Using Object.keys()

By using the Object.keys(obj) method, we will get the array of keys, which we will further use for extracting the data. We have defined a function that retrieves the values by using an index using the method Object.keys().

Example: Let’s see an example to demonstrate the above mentioned approach.

Javascript

let obj = { 
    a: "abc", 
    b: "cde", 
    findByIndex: function (n) { 
        return this[Object.keys(this)[n]]; 
    } 
}; 
console.log(obj.findByIndex(1));

Output

cde

Using Object.values()

By using the Object.values(obj) method, we will get an array of values, which we will further use for extracting the data. We have defined a function that retrieves the values by using an index using the method Object.values().

Example : Let’s see an example to demonstrate the above

Javascript

let obj = { 
    a: "abc", 
    b: "cde", 
    findByIndex: function (n) { 
        let arr = Object.values(this) 
        return arr[n] 
    } 
}; 
console.log(obj.findByIndex(0))

Output

abc

Using Object.entries()

By using the Object.entries(obj) method, we will get the array of each entry of the object, which we will further use for extracting the data. We have defined a function that retrieves the values by using the index using the method Object.entries().

Example : Let’s see an example to demonstrate the above

Javascript

let obj = { 
    a: "abc", 
    b: "cde", 
    findByIndex: function (n) { 
        let arr = Object.entries(this) 
        return arr[n][1] 
    } 
}; 
console.log(obj.findByIndex(0))

Output

abc

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