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Calculate MD5 checksum for a file in Javascript

md5 checksum javascript:

const crypto = require('crypto')
crypto.createHash('md5').update('hello world').digest('hex')

calculate the MD5 hash using the MD5 function of CryptoJS and the HTML5 FileReader API.

var holder = document.getElementById('holder');

holder.ondragover = function() {
  return false;

holder.ondragend = function() {
  return false;

holder.ondrop = function(event) {

  var file = event.dataTransfer.files[0];
  var reader = new FileReader();

  reader.onload = function(event) {
    var binary =;
    var md5 = CryptoJS.MD5(binary).toString();



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