What is a CORS Error?
CORS stands for Cross-Origin Resource Sharing. It is a security feature implemented by web browsers to prevent potentially unsafe cross-origin HTTP requests. Cross-origin requests occur when a web page hosted on one domain tries to make a request to a different domain (origin) for resources like APIs, images, fonts, or data.
The Reason Behind CORS Errors
Web browsers enforce the same-origin policy, which means that web pages can only make requests to the same origin from which they were loaded. This policy is in place to prevent malicious websites from making unauthorized requests on behalf of users. CORS errors occur when a web page attempts to make a cross-origin request and the server hosting the requested resource doesn't include the necessary CORS headers to allow the request from the requesting origin.
How to Fix CORS Errors
To fix CORS errors, you need to configure your server to send the appropriate CORS headers in its responses. These headers include information about which origins are allowed to access the server's resources. There are a few ways to do this
To fix the cors error we have to make sure that you are serving your HTML file through the backend server to do this open your JS file or your code and paste this
app.get('/', (req,res) => {
res.sendFile(path.join(_dirname, "index.html"))
})
Hope this will solve your CORS error.