An elastic, reusable SVG-only input-textfield prototype created with d3v4. It's still a little rough around the edges. Especially when inputting special characters.
See code comments for possible options.
xxxxxxxxxx<head> <meta charset="utf-8"> <base target="_blank"> <script src="https://d3js.org/d3.v4.min.js"></script></head><body> <script src="textfield.js"></script> <script src="svg.js"></script></body></html> https://d3js.org/d3.v4.min.js