Fetch

Cross-Origin Resource Sharing (CORS) is an essential mechanism that enables communication between clients and servers, even if they are on different domains. Normally, JavaScript applications running in the browser can only access HTTP resources on the same domain that serves them. However, CORS provides a way to allow connections to other servers. By default, certain resources like images, scripts, and styles can be loaded from different origins. However, requests made using XHR or Fetch to a different domain, subdomain, port, or protocol will fail unless the server implements a CORS policy....

Discover the functionality of the FormData object and learn how to effectively utilize it. The FormData object serves as a storage mechanism for preserving input field values within a form. It is particularly beneficial when you need to transmit files to a server. This object is typically only utilized in such circumstances. To demonstrate the utilization of FormData in sending file content via fetch, consider the following example: <input type="file" id="fileUpload" /> Here, an input field of type “file” is presented....