JSFiddle - React, Tailwind, and code Playground
by geekrose Lee
HTML
<div id="piechart">
<svg>
<defs> </defs>
<rect> </rect>
<g>
<rect> </rect>
<g> ... </g>
<g> ... </g>
<g> ... </g>
<path> </path>
<g> ... </g>
<path> </path>
</g>
<g> </g>
<g> </g>
<g> </g>
</svg>
</div>
JavaScript
var svg = $("#piechart svg");
var categoriescontainer = svg.find('g').first();
var countcategories = categoriescontainer.children('g').length;
alert(countcategories);