I am reading the Active Storage documentation available here 
<https://github.com/rails/rails/tree/master/activestorage#direct-upload-javascript-events>
 and 
I am trying to find out how to display a progress bar. Just to test I added 
the following code inside my application.js

The image gets uploaded on amazon just fine but I see nothing in browser's 
console

        addEventListener("direct-upload:initialize", doSomething, false);

        function doSomething(e) {
                alert("Event is called: " + e.type);
        }

I also tried this but I do not see anything in console.

document.getElementById("image_form").addEventListener("direct-upload:initialize",
 function() {
  console.log('direct-uploads:initialize')
});

document.getElementById("image_form").addEventListener("direct-uploads:end", 
function() {
  console.log('direct-uploads:start')
});

I would like to know how to make use of the events available? 


Any help will be really appreciated as I am really stuck and cant find any 
material on how to do this.

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