JSFiddle - React, Tailwind, and code Playground
by booktu8
HTML
<svg width="400" viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg">
<g id="group_text_1">
<text x="5" y="16" transform="scale(2, 2)">Hello World!</text>
<text x="8" y="32" transform="translate(0 20) scale(1.25 1)">Hello World Again!</text>
</g>
<!-- Shows BBox in green -->
<rect id="rect_1" stroke="#00ff00" stroke-width="3" fill="none"> </rect>
<!-- Shows BoundingClientRect in red -->
<rect id="rect_2" stroke="#ff0000" stroke-width="3" fill="none"></rect>
</svg>
CSS
*{margin:0}
JavaScript
var rectBBox = document.querySelector('#rect_1');
var rectBoundingClientRect = document.querySelector('#rect_2');
var groupElement = document.querySelector('#group_text_1');
var bboxGroup = groupElement.getBBox();
rectBBox.setAttribute('x', bboxGroup.x);
rectBBox.setAttribute('y', bboxGroup.y);
rectBBox.setAttribute('width', bboxGroup.width);
rectBBox.setAttribute('height', bboxGroup.height);
var boundingClientRectGroup = groupElement.getBoundingClientRect();
rectBoundingClientRect.setAttribute('x', boundingClientRectGroup.x);
rectBoundingClientRect.setAttribute('y', boundingClientRectGroup.y);
rectBoundingClientRect.setAttribute('width', boundingClientRectGroup.width);
rectBoundingClientRect.setAttribute('height', boundingClientRectGroup.height);