//Assuming you have canvas and context (ctx) set up: ctx.fillStyle = "(enter color)"; ctx.fillRect(x, y, width, height); //to set up canvas and context: var canvas = document.getElementById("(enter canvas's id)"); var ctx = canvas.getContext("2d");
var c = document.getElementById("myCanvas"); var ctx = c.getContext("2d"); ctx.beginPath(); ctx.rect(20, 20, 150, 100); ctx.stroke();
// canvas context.fillRect(x, y, width, height); ctx.fillRect(20, 20, 150, 100);