overwrite a file with HTML5 FileWriter

Question

I\'m using HTML5 FileWriter API to save the state of my webapp. I have bit of JS that periodically calls FileWriter.write to do that (so , over time, the

Answer 1

This is the simplest way how i use to delete the content of a file with syncFileSystem in my Chrome App.

Two createWriter, the first one truncates then the second one overwrites with nothing (you can change with your new value) :

file.createWriter((fileWriter)=>fileWriter.truncate(0));

file.createWriter((fileWriter)=> {

  fileWriter.onwriteend = function() {
    console.log('New Actions!');
  };

  var blob = new Blob([''], {type: 'text/plain'});
  fileWriter.write(blob);

});