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Other References

CSSStyleDeclaration JS Conversion


Canvas clearRect() Method

❮ Canvas Reference

Example

Clear a rectangle on the canvas:

YourbrowserdoesnotsupporttheHTML5canvastag.

JavaScript:

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

ctx.fillStyle = "red";
ctx.fillRect(20, 20, 200, 100);
ctx.clearRect(40, 40, 50, 50);
Try it Yourself »

Description

The clearRect() method clears specified pixels on the canvas.

The clearRect() method does not change the current path.

The cleared area is set to tranparent rgba(0,0,0,0).

Note

Always call beginPath() before drawing after clearRect().

See Also:

The fillStyle Property (Set a fill color or pattern)

The fillRect() Method (Draw a filled rectangle)

The strokeRect() Method (Draw a rectangle)

The rect() Method (Add a rectangle to the path)


Syntax

context.clearRect(x, y, width, height)

Param Values

Param 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 to clear in pixels Play it »
height The height of the rectangle to clear in pixels Play it »

Return Value

NONE

Browser Support

The <canvas> element is an HTML5 standard (2014).

clearRect() is supported in all modern browsers:

Chrome Edge Firefox Safari Opera IE
Yes Yes Yes Yes Yes 9-11

❮ Canvas Reference