clearRect() to erase or clear rectangle with X Y coordinates and height width on a Canvas

clearRect() on Canvas

Drag the sliders to change the X, Y postion and height width values for the clear rectangle.

void gctx.clearRect(x, y, width, height );

x: Position from left edge of the canvas,
y: Position from Top edge of the canvas,
width : Width of the rectangle.
height : Height of the rectangle.

To clear full canvas

gctx.clearRect(0, 0, my_canvas.width,my_canvas.height);

Code to clear part of the Canvas.

var my_canvas=$('#my_canvas').get(0)
var gctx = my_canvas.getContext("2d");
gctx.beginPath()
gctx.clearRect(20,20,50,50);
gctx.stroke();

This article is written by plus2net.com team.

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clearRect() on Canvas

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