JSFiddle - React, Tailwind, and code Playground
HTML
<canvas id="myCanvas" width="200" height="100" style="border:1px solid #c3c3c3;">
Trình duyệt không hỗ trợ phần tử canvas.
</canvas>
JavaScript
var canvas = document.getElementById("myCanvas");
var ctx = canvas.getContext("2d");
ctx.fillStyle = "#FF0000";
ctx.fillRect(0,0,150,75);