How to useNumerical Keys and Values in JavaScript in Javascript
In this approach initializes an empty object and adds key-value pairs using numerical keys, resulting in an object with properties assigned to respective values.
Example 1: This is the simplest as well as the native approach. In this approach, we will directly append the key-value pair(s) in that previously created empty object.
let object = {};
let firstKey = 0;
let firstKeyValue = "w3wiki";
let secondKey = 1;
let secondKeyValue = "Hello JavaScript";
let thirdKey = 2;
let thirdKeyValue = "Hello React";
object[firstKey] = firstKeyValue;
object[secondKey] = secondKeyValue;
object[thirdKey] = thirdKeyValue;
console.log(object);
Output
{ '0': 'w3wiki', '1': 'Hello JavaScript', '2': 'Hello React' }
How to create an object from the given key-value pairs using JavaScript ?
In this article, we will learn to create an object from the given key-value pairs using JavaScript.Key-value pair: Unique identifier (key) associated with its corresponding value; fundamental for data organization and retrieval in programming. here we have some common approaches.
We will explore the process of creating objects from key-value pairs in JavaScript. Key-value pairs are fundamental in organizing and retrieving data efficiently within programs. We’ll discuss various common approaches to achieve this goal, empowering you with the knowledge to handle key-value data effectively in your JavaScript projects. Let’s see and discover these approaches together.
Following are some approaches to achieve the mentioned target.
Table of Content
- Approach 1: Using Numerical Keys and Values in JavaScript
- Approach 2: Using Object.assign()
- Approach 3: Using for loop
- Approach 4: Using a custom function
- Approach 5: Using the Map object
- Approach 6: Using Array.prototype.reduce()
We will explore all the above methods along with their basic implementation with the help of examples.
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