JSFiddle - React, Tailwind, and code Playground

HTML

<div id="container"></div>

JavaScript

var svg = document.createElementNS('http://www.w3.org/2000/svg', 'svg');
svg.setAttribute('width','200');
svg.setAttribute('height','200');


var line = document.createElementNS('http://www.w3.org/2000/svg', 'line');
line.setAttribute('width', '0');
line.setAttribute('height', '0');
line.setAttribute('x1', '0');
line.setAttribute('y1', '0');
line.setAttribute('x2', '150');
line.setAttribute('y2', '150');
line.setAttribute('stroke', 'rgb(255,0,0)');
line.setAttribute('stroke-width', '2');

svg.appendChild(line);

var ct = document.getElementById('container'); 
ct.appendChild(svg);