CanvasRenderingContext2D: fill() method

fillRule

The algorithm by which to determine if a point is inside or outside the filling region. Possible values:

nonzero

The non-zero winding rule. Default rule.

evenodd

The even-odd winding rule.

path

A Path2D path to fill.

None (undefined).

This example fills a rectangle with the fill() method.

HTML

<canvas id="canvas"></canvas>

JavaScript

const canvas = document.getElementById("canvas");
const ctx = canvas.getContext("2d");
ctx.rect(10, 10, 150, 100);
ctx.fill();

Result

This example saves some intersecting lines to a Path2D object. The fill() method is then used to render the object to the canvas. A hole is left unfilled in the object's center by using the "evenodd" rule; by default (with the "nonzero" rule), the hole would also be filled.

HTML

<canvas id="canvas"></canvas>

JavaScript

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

// Create path
let region = new Path2D();
region.moveTo(30, 90);
region.lineTo(110, 20);
region.lineTo(240, 130);
region.lineTo(60, 130);
region.lineTo(190, 20);
region.lineTo(270, 90);
region.closePath();

// Fill path
ctx.fillStyle = "green";
ctx.fill(region, "evenodd");

Result

• The interface defining this method: CanvasRenderingContext2D
• CanvasRenderingContext2D.fillStyle