HTML canvas rect() Method
Example
Draw a 150*100 pixels rectangle:
JavaScript:
var c = document.getElementById("myCanvas");
var ctx = c.getContext("2d");
ctx.rect(20, 20, 150, 100);
ctx.stroke();
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Browser Support
The numbers in the table specify the first browser version that fully supports the method.
| Method | |||||
|---|---|---|---|---|---|
| rect() | Yes | 9.0 | Yes | Yes | Yes |
Definition and Usage
The rect() method creates a rectangle.
Tip: Use the stroke() or the fill() method to actually draw the rectangle on the canvas.
| JavaScript syntax: | context.rect(x,y,width,height); |
|---|
Parameter Values
| Parameter | Description | Play it |
|---|---|---|
| x | The x-coordinate of the upper-left corner of the rectangle | Play it » |
| y | The y-coordinate of the upper-left corner of the rectangle | Play it » |
| width | The width of the rectangle, in pixels | Play it » |
| height | The height of the rectangle, in pixels | Play it » |
More Examples
Example
Create three rectangles with the rect() method:
JavaScript:
var c = document.getElementById("myCanvas");
var ctx = c.getContext("2d");
// Red rectangle
ctx.beginPath();
ctx.lineWidth = "6";
ctx.strokeStyle = "red";
ctx.rect(5, 5, 290, 140);
ctx.stroke();
// Green rectangle
ctx.beginPath();
ctx.lineWidth = "4";
ctx.strokeStyle = "green";
ctx.rect(30, 30, 50, 50);
ctx.stroke();
// Blue rectangle
ctx.beginPath();
ctx.lineWidth = "10";
ctx.strokeStyle = "blue";
ctx.rect(50, 50, 150, 80);
ctx.stroke();
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❮ HTML Canvas Reference
