Create A Blank Html Space On The Fly Javascript

Try using this:

myElement.appendChild( document.createTextNode( '\u00A0' ) );

If you want/need more spaces, use several \u00A0 e.g.:

myElement.appendChild( document.createTextNode( '\u00A0\u00A0' ) );

This one:

document.createEntityReference('nbsp');

doesn’t work all browsers, so avoid it.