JSFiddle - React, Tailwind, and code Playground

HTML

<canvas id="c" />

JavaScript

var c2 = document.getElementById('c').getContext('2d');
c2.fillStyle = '#f00';
c2.beginPath();
c2.moveTo(0, 0);
c2.lineTo(100, 50);
c2.lineTo(50, 100);
c2.lineTo(0, 90);
c2.closePath();
c2.fill();