SVG turns black when cloned

Question

I was playing with the clone() function from jQuery when I found out a strange behavior.

This code reproduces the problem. A first div contains an SVG. Two buttons allows doing/undoing a clone of the SVG into a second div. Trying it two times makes the circle to turn black.

HTML

<div id="orgdiv">
    <svg width="200" height="200" style="margin:0">
        <linearGradient  id="r" x1="0" y1="0" x2="1" y2="1">
            <stop offset="0%" stop-color="#00ffff"></stop>
            <stop  offset="100%" stop-color="#ffff00"></stop>
        </linearGradient>
        <circle cx="100" cy="100" r="80" style="fill:url(#r)" />
    </svg>
</div>

<input type="button" value="copy">
<input type="button" value="clear">

<div id="copydiv"></div>

JS

$('input[value="copy"]').click(function(){
    $("#copydiv").html($("#orgdiv").clone());
});

$('input[value="clear"]').click(function(){
    $("#copydiv").empty();
});

jsFiddle here

Note:

• cloning with jQuery or Javascript leads to the same bug.

Answer 1

@Matt Gibson presents a hack: drumming up new ids and then having duplicated html with redundant linearGradient definitions referencing the original linearGradient.

Happily, you do you need to do this ;)

Part of the strength of the svg tags is that they're their own mad little containers. so you can reference stuff externally from an uri.

&So if you're in the cloning business, then instead of worrying about ids, you can abstract out the template model & re-use it ad-infinitum:

$(document).ready(function(){
  $('input[value="copy"]').click(function () {
      $("#copydiv").append($(":first", "#orgdiv").clone());
  });

  $('input[value="clear"]').click(function () {
      $("#copydiv").empty();
  });
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

<!-- ------------------- platonic horse ------------------------- -->
<div style="visibility:hidden; position:absolute; width:0">
  <svg>
    <g id="my-funky-svg-defs">
	  <defs>
	    <radialGradient id="gradient" cx="25%" cy="25%" r="100%" fx="40%" fy="40%">
		  <stop offset=  "0%" stop-color="hsla(313,  80%, 80%, 1)"/>
		  <stop offset= "40%" stop-color="hsla(313, 100%, 65%, 1)"/>
		  <stop offset="110%" stop-color="hsla(313, 100%, 50%, 0.7)"/>
	    </radialGradient>
	  </defs>    
	  <title>smarteee</title>
	  <circle  class="face" cx="200" cy="200" r="195" fill="url(#gradient)" />
	  <ellipse class="eye eye-left" cx="140" cy="150" rx="10" ry="40" fill="#131313"/>
	  <ellipse class="eye eye-right" cx="260" cy="150" rx="10" ry="40" fill="#131313"/>
	  <path class="smile" d="M120,280 Q200,330 280,280" stroke-width="10" stroke="#131313" fill="none" stroke-linecap="round"/>
    </g>
  </svg>	
</div>

<!-- ---------------------- prototype ----------------------- ---- -->
proto
<input type="button" value="copy"/>
<hr/>
<div id="orgdiv">
    <svg width="20px" height="20px" viewBox="0 0 400 400" style="margin:20px;">
        <use xlink:href="#my-funky-svg-defs"></use>
    </svg>
</div>

<!-- ------------------------- clones ----------------------- ---- -->
clones
<input type="button" value="clear"/>
<hr/>
<div id="copydiv"></div>

Also here's a fork of your jsfiddle.