Javascript read file without using input

Question

I have this code and for a file to be converted into base64 I have to click on Choose file and then select it. I want to hardcode the file name so it is converted to base64

Answer 1

You can launch chromium, chrome browser with --allow-file-access-from-files flag set, use fetch() of XMLHttpRequest() to request file from local filesystem.

fetch("file:///path/to/file")
.then(response => response.arrayBuffer())
.then(ab => {
  // do stuff with `ArrayBuffer` representation of file
})
.catch(err => console.log(err));

See also Read local XML with JS