How to useArray.prototype.reduce() in Javascript
In this approach, we utilize the reduce method on arrays of keys and values to build an object. The reduce method iterates through the arrays, adding each key-value pair to the accumulator object.
Syntax:
let object = keys.reduce((acc, key, index) => {
acc[key] = values[index];
return acc;
}, {});
Example: This example demonstrates how to use the reduce method to create an object from arrays of keys and values.
const keys = [0, 1, 2];
const values = ["w3wiki", "Hello JavaScript", "Hello React"];
const object = keys.reduce((acc, key, index) => {
acc[key] = values[index];
return acc;
}, {});
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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