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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