How to preview an image before it is uploaded in JavaScript?

Javascript Web Development Object Oriented Programming

To upload an image, use FileReader() in JavaScript. Following is the JavaScript code −

Example

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<link rel="stylesheet" href="//code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">
<script src="https://code.jquery.com/jquery-1.12.4.js"></script>
<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
</head>
<body>
<form runat="server">
<input type='file' id="yourImage" />
<img id="chooseImage" src="#" alt="image" />
</form>
<script>
   function readImage(fileInput) {
      if (fileInput.files && fileInput.files[0]) {
         var takingInputFile = new FileReader();
         takingInputFile.onload = function(event) {
            $('#chooseImage').attr('src', event.target.result);
         }
         takingInputFile.readAsDataURL(fileInput.files[0]);
      }
   }
   $("#yourImage").change(function() {
      readImage(this);
   });
</script>
</body>
</html>

To run the above program, save the file name anyName.html(index.html) and right click on the file and select the option Open with live server in VS code editor.