JSFiddle - React, Tailwind, and code Playground
HTML
<script>
function draw(){
var canvas = $('canvas')[0]
if (canvas.getContext){
var ctx = canvas.getContext('2d');
ctx.fillStyle="green";
ctx.fillRect(25,25,100,100);
ctx.clearRect(45,45,60,60);
ctx.strokeRect(50,50,50,50);
}
}
</script>
<body onload="draw();">
<canvas id="canvas" width="150" height="150"></canvas>
<button>click me</botton>