JSFiddle - React, Tailwind, and code Playground

by versusbassz

HTML

<!-- @see https://stackoverflow.com/questions/4459379/preview-an-image-before-it-is-uploaded -->
 <form id="form1" runat="server">
     <input type='file' id="imgInp" />
   </form>

<div>
<div class="bg"><img id="blah" src="#" alt="your image" /></div>
</div>

CSS

.bg {
  display: inline-block;
  margin-top:20px;
  background-color: #333 !important;
}

JavaScript

function readURL(input) {
        if (input.files && input.files[0]) {
            var reader = new FileReader();
            
            reader.onload = function (e) {
                $('#blah').attr('src', e.target.result);
            }
            
            reader.readAsDataURL(input.files[0]);
        }
    }
    
    $("#imgInp").change(function(){
        readURL(this);
    });