Network Requests

The Network Request can be understood with a simple example, Mukesh goes to buy some sweets which are not available in the shop but he want them urgent and was ready to pay more. The person at counter told Mukesh that let as ask the chef, (this shows the network request). The chef replied through the counter person that he will make (this shows the result of the request made).

Polyfills

Polyfills in JavaScript are code snippets or modules that provide modern functionality to older browsers that lack support for those features.

Higher Order Functions

The Higher-order functions are a fundamental concept in JavaScript. A “higher-order function” is a function that accepts functions as parameters and/or returns a function.

Form Data

The formData is related to the HTML forms. The FormData object is used to handle data from HTML forms and construct the corresponding multipart/form-data request payload. This object allows you to easily gather form data, including text inputs, file uploads, and other form elements.

Fetch API

The Fetch API is a modern web API that provides a powerful and flexible way to make HTTP requests in JavaScript. It allows you to send and receive data from a web server asynchronously, without the need for a full page reload.

CORS

Cross-origin requests occur when a JavaScript code running on one domain tries to make an HTTP request to a different domain . Due to security restrictions imposed by web browsers, these requests are typically blocked by default.

Closures

Closures allows functions to again access to the variables from their parent scopes even after the upper function has been executed successfully. In other words, a closure is a function bundled together with its surrounding state (lexical environment).

Axios

The Axios is a popular JavaScript library used for making HTTP requests from a web browser or Node.js. It provides a simple and elegant API for handling asynchronous HTTP requests and responses. Axios supports various features like interceptors, request cancellation, automatic JSON data parsing, and more.