The CanvasRenderingContext2D.strokeRect()
method of the Canvas 2D API draws a rectangle that is stroked (outlined) according to the current strokeStyle
and other context settings.
This method draws directly to the canvas without modifying the current path, so any subsequent fill()
or stroke()
calls will have no effect on it.
strokeRect(x, y, width, height)
The strokeRect()
method draws a stroked rectangle whose starting point is at (x, y)
and whose size is specified by width
and height
.
This example draws a rectangle with a green outline using the strokeRect()
method.
HTML
<canvas id="canvas"></canvas>
JavaScript
The rectangle's top-left corner is at (20, 10). It has a width of 160 and a height of 100.
const canvas = document.getElementById("canvas");
const ctx = canvas.getContext("2d");
ctx.strokeStyle = "green";
ctx.strokeRect(20, 10, 160, 100);
Result
This example draws a rectangle with a drop shadow and thick, beveled outlines.
HTML
<canvas id="canvas"></canvas>
JavaScript
const canvas = document.getElementById("canvas");
const ctx = canvas.getContext("2d");
ctx.shadowColor = "#d53";
ctx.shadowBlur = 20;
ctx.lineJoin = "bevel";
ctx.lineWidth = 15;
ctx.strokeStyle = "#38f";
ctx.strokeRect(30, 30, 160, 90);
Result