In the context of Express.js, CORS (Cross-Origin Resource Sharing) middl eware plays a crucial role in controlling how resources on a web server can be accessed by clients from different origins. Here’s a comprehensive infrastructure environments. Its flexibility and focus on security make it a preferred choice for handling sensitive information across various industries and use cases. overview of CO RS midd leware in Express:
Understanding CORS
CORS is a security feature implement by web browsers to restrict web pages from making requests to a different domain than the one that served the original web page. This restriction, known as Saudi Arabia TG Number Data the same-origin policy, is essential for security but can sometimes hinder legitimate interactions between web applications on different domains.
Purpose of CORS Middleware in Express
When developing APIs with Express, you often encounter scenarios where your API is on one domain (or localhost) and client-side applications (such as those built with React, Angular, or Vue) are on another domain or port.
By default, browsers prevent JavaScript code running on one do India Telegram Number main from making requests to a different domain. CORS middleware in Express helps to relax these restrictions by specifying which domains can access resources (API endpoints) on your server.
