document.querySelector('input[type="file"]').addEventListener("change", function () {
	if (this.files && this.files[0]) {
		var img = document.querySelector("img");
		img.onload = () => {
			URL.revokeObjectURL(img.src); // no longer needed, free memory
		};

		img.src = URL.createObjectURL(this.files[0]); // set src to blob url
	}
});