JSFiddle - React, Tailwind, and code Playground

by samet19

HTML

<input id="inputFileToLoad" type="file" onchange="encodeImageFileAsURL();" />
<img src="https://mdbootstrap.com/img/Photos/Others/placeholder-avatar.jpg" id="output" width="100" height="100" style="border-radius: 50%;" />

JavaScript

function encodeImageFileAsURL() {

  var filesSelected = document.getElementById("inputFileToLoad").files;
  if (filesSelected.length > 0) {
    var fileToLoad = filesSelected[0];
    var fileReader = new FileReader();
    fileReader.onload = function(fileLoadedEvent) {
      var srcData = fileLoadedEvent.target.result; // <--- data: base64
      var newImage = document.createElement('img');
      newImage.src = srcData;
      document.getElementById("output").src = newImage.src;
    }
    fileReader.readAsDataURL(fileToLoad);
  }
}