<!DOCTYPE html>
<html lang="">
<head>
<meta charset="utf-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width,initial-scale=1.0" />
<title>img - base64</title>
</head>
<body>
<input type="file" id="imgFile" method="post" enctype="multipart/form-data">
<button type="button" onclick="toBase64()">img-base64</button>
</body>
<script type="text/javascript">
function toBase64() {
const img = document.getElementById("imgFile");
const imgFile = new FileReader();
imgFile.readAsDataURL(img.files[0]);
imgFile.onload = function () {
const imgData = this.result;
console.log(imgData);
}
}
</script>
</html>
