new FileReader()
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
</head>
<body>
<img src="./img/Home.png" />
<input type="file" class="upload" />
</body>
<script>
document.querySelector(".upload").onchange = function(){
console.log(this.files[0]);
let fileReader = new FileReader();
fileReader.readAsDataURL(this.files[0]);
fileReader.onload = function(){
console.log(fileReader.result);
}
}