JSFiddle - React, Tailwind, and code Playground

by Josh Pullen

CSS

canvas {
  border: 1px solid black;
  max-width: calc(100vw - 20px);
  max-height: calc(100vh - 20px);
}

JavaScript

function render(canvas, ctx) {
	ctx.beginPath();
	for (let x = -3; x <= 3; x++) {
  	ctx.moveTo(x, -100);
    ctx.lineTo(x, -100);
  }
  for (let y = -3; y <= 3; y++) {
  	ctx.moveTo(-100, y);
    ctx.lineTo(100, y);
  }
  ctx.strokeStyle = "#ddd";
  ctx.lineWidth = 0.05;
  ctx.stroke();
}





const canvas = document.createElement("canvas");
const ctx = canvas.getContext("2d");

canvas.width = 640;
canvas.height = 480;

document.body.appendChild(canvas);

ctx.clearRect(0, 0, canvas.width, canvas.height);
ctx.translate(canvas.width / 2, canvas.height / 2);
ctx.scale(100, -100);
render(canvas, ctx);