title: d3.js. How to append documentFragment to SVG?
body: <p>See my example on <a href="http://jsfiddle.net/zeleniy/5g6u33wy/1/" rel="nofollow">jsfiddle</a>. One red <code>rect</code> exists as static markdown. Second green <code>rect</code> is appended using <a href="https://github.com/mbostock/d3/wiki/Selections#append" rel="nofollow">append</a> method. Where is blue <code>rect</code>? You can see with any document inspector that blue <code>rect</code> already inserted within <code>svg</code> element, but it is not visible. Why? I try to insert big amount of rectangles into SVG using <code>documentFragment</code> but they all are not visible...</p>