Simple Method to Calculate the Hash of a file in Javascript using HTML5 API

ExampleFileMD5.js

//Event Listener tied to the file input field
document.getElementById('attachment').addEventListener('change', eventHandler, false)

/**
*Description:	Simple method to handle an event
*and fire off a function
**/
function eventHandler(evt){
	var file = evt.target.files[0];
		fileHash( file, md5, function(x){
			console.log( x );
		});
	}
	
/**
*Description: The actual function to calculate the hash
*Arguments:
*file:	a file from a file input load event
*hasher:	hashing algorithm
*callback:	function that does something with the hash
**/
	function fileHash( file, hasher, callback ){
		//Instantiate a reader		  
		var reader = new FileReader();
			  
		//What to do when we gets data?
		reader.onload = function( e ){
			var hash = hasher(e.target.result);
			callback( hash );
		}
			
		reader.readAsBinaryString( file );

	}

I'm getting "md5 is not defined". What is md5 in your code? Thank you.
(I'm testing in raw html)

I'm getting "md5 is not defined". What is md5 in your code? Thank you. (I'm testing in raw html)
See this one, it worked for me:
https://techoverflow.net/2021/11/26/how-to-compute-sha-hash-of-local-file-in-javascript-using-subtlecrypto-api/