How to work with svg elements with jQuery?

Question

JavaScript

There is a canvas, I have to drag elements onto it, but so far I'm only dealing with svg in general
And I can't understand why it doesn't add a blue block:

https://jsfiddle.net/us9he7tg/

Answer 1

https://habrahabr.ru/post/185750/

Answer 2

If I were you, I would switch to D3.js. This library is specially made for manipulating SVG.
jQuery is superfluous in this scheme.