JSFiddle - React, Tailwind, and code Playground

HTML

<canvas width="600" height="400">

JavaScript

var canvas = document.getElementsByTagName("canvas")[0];
var context = canvas.getContext("2d");

context.beginPath();

context.moveTo(100, 150);
context.lineTo(250, 75);
context.lineTo(125, 30);

context.closePath();

context.lineWidth = 5;
context.stroke();

context.fillStyle = "red";
context.fill();