Access to XMLHttpRequest has been blocked by CORS policy node js

  1. Enable CORS in your Node.js application by installing the cors package using npm.
  2. Import the cors package into your Node.js application.
  3. Use the app.use() function in your Node.js application to apply the CORS middleware to all routes.
  4. Configure the CORS middleware to specify which origins are allowed to access your Node.js application.
  5. Test your Node.js application to ensure that the CORS policy is successfully implemented.