I am trying to have a file upload feature in my React application but am running into a problem. When I try to upload a first picture, it works just fine. The file explorer dialog closes and my pic...

The problem is basically what the title says. The minimal example to demonstrate it is below. This function accepts a File object as an argument from <input type='file' /> field. It creates a...

I am trying to save a blob to localforage and then retrieve it and display it. It works fine for a while, but after a couple of page refreshes or browser closes I get an error on some of the blobs....

I'm developing an iframeable component and have now stumbled over something that looks like a security problem. I have two web sites: site A, running at http://localhost:3002 site B, running at ht...