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HTML canvas rect () method

Canvas Object Reference Canvas object

Examples

Draw a rectangle 150 * 100 pixels:

YourbrowserdoesnotsupporttheHTML5canvastag.

JavaScript:

var c=document.getElementById("myCanvas");
var ctx=c.getContext("2d");
ctx.rect(20,20,150,100);
ctx.stroke();

try it"

Browser Support

Internet ExplorerFirefoxOperaGoogle ChromeSafari

Internet Explorer 9, Firefox, Opera, Chrome and Safari support rect () method.

Note: 8 and earlier versions of Internet Explorer do not support the <canvas> element.


Definition and Usage

rect () method to create a rectangle.

Tip: Use the stroke () or fill () method on the canvas to actually draw the rectangle.

JavaScript syntax: context .rect (x, y, width, height);

Parameter Value

参数 描述
x 矩形左上角的 x 坐标。
y 矩形左上角的 y 坐标。
width 矩形的宽度,以像素计。
height 矩形的高度,以像素计。


Examples

More examples

Examples

By rect () method to create three rectangles:

Your browser does not support the canvas tag.

JavaScript:

var c=document.getElementById("myCanvas");
var ctx=c.getContext("2d");

// 红色矩形
ctx.beginPath();
ctx.lineWidth="6";
ctx.strokeStyle="red";
ctx.rect(5,5,290,140);
ctx.stroke();

// 绿色矩形
ctx.beginPath();
ctx.lineWidth="4";
ctx.strokeStyle="green";
ctx.rect(30,30,50,50);
ctx.stroke();

// 蓝色矩形
ctx.beginPath();
ctx.lineWidth="10";
ctx.strokeStyle="blue";
ctx.rect(50,50,150,80);
ctx.stroke();

try it"


Canvas Object Reference Canvas object