How to usethe Map object in Javascript
In this approach we are using the Map object and the Object.fromEntries() method to create an object from arrays of keys and values, effectively mapping numerical keys to their corresponding string values.
Example: The example uses the Map object and Object.fromEntries() to create an object with numerical keys and string values from arrays.
const keys = [0, 1, 2];
const values = ["w3wiki", "Hello JavaScript", "Hello React"];
const keyValuePairs = keys.map((key, index) => [key, values[index]]);
const object = Object.fromEntries(keyValuePairs);
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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