How do I append blob to dom?

I’m new to blobs, so I’m hoping for a little direction to save hours more of fruitless brute-force attempts.

I use the below php (from here) to return the base64-encoded image from my database to the get javascript function.

echo '<img src="data:image/jpeg;base64,'.base64_encode( $row['Photo'] ).'"==/>';

In javascript with console.log(this.responseText), I can see the encoding. But I’m not sure how it’s appended to the dom so I can see the image in the webpage.

I’m used to appending to the dom in the following way:

var photo = document.createElement('img'); 
photo.src = X;
document.body.insertBefore(photo,document.body.firstChild);

But presumably some decoding is required on client side.

I’d be happy with a link to another stackoverflow question if you know a fitting one.

Most of the stackoverflow questions on the subject I have found (e.g.) get to decoding or the echoing, but not an explicit treatment of including that image in the DOM.

Any help appreciated.

Answer

The solution, as given by @CertainPerformance, is a trivial variation on the linked solutions given elsewhere.

Echoing back the following allows for appending to the DOM as expected:

echo 'data:image/jpeg;base64,'.base64_encode( $row['Photo'] );