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HTML Canvas Examples

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Try-it Yourself Examples

The examples below embeds canvas directly into the HTML code.

HTML Canvas is supported in all major browsers.

Canvas Intro

An empty canvas First drawing on canvas

Examples explained

Canvas Coordinates

Draw a rectangle Draw a line Draw a circle

Examples explained

Canvas Lines

Draw a line lineWidth - Set width of line strokeStyle - Set color of line lineCap - Set cap style of line

Examples explained

Canvas Fill and Stroke

fillStyle - Set the fill-color strokeStyle - Set the outline color fillStyle and strokeStyle combined fillStyle and strokeStyle with alpha channel (opacity)

Examples explained

Canvas Shapes

Create a shape of straight lines Create a triangle Use strokeStyle to color the shape

Examples explained

Canvas Rectangles

rect() - Define a rectangle fillRect() - Draw a filled rectangle fillStyle - Fill color for rectangle strokeRect() - Draw a stroked (outlined) rectangle strokeStyle - Set color for the outline Create three rectangles with the rect() method Create three rectangles with the strokeRect() method

Examples explained

Canvas clearRect()

Clear a rectangular area in a filled rectangle Clear a rectangular area inside and outside a filled rectangle Clear a rectangular area in a stroked rectangle

Examples explained

Canvas Circles

Draw a full circle Draw a full circle with colors Draw a half circle Draw an arc from start-angle 0 to end-angle 0.5 * PI Draw an arc counterclockwise from start-angle 0 to end-angle 0.5 * PI

Examples explained

Canvas Curves

quadraticCurveTo() - Draw a quadratic Bezier curve bezierCurveTo() - Draw a cubic Bezier curve

Examples explained

Canvas Linear Gradients

Create a linear gradient with two color stops Fill an outlined rectangle with a gradient Create a linear gradient with three color stops Create a vertical linear gradient (vary the parameter values on the y-axis (change y2)) Create a diagonal linear gradient (varying both the x- and y-axis parameters) Fill circle with gradient Fill text with gradient Fill outlined text with gradient

Examples explained

Canvas Radial Gradients

Create a radial gradient with two color stops Radial gradient with smaller end circle Move center point of end circle Radial gradient with three color stops

Examples explained

Canvas Text

fillText() - Draw a filled text strokeText() - Draw outlined text font - Add bold and italic to font

Examples explained

Canvas Text Color

fillStyle - Set the fill color of text strokeStyle - Set the otline color of text Fill text with gradient Fill outlined text with gradient

Examples explained

Canvas Text Alignment

textBaseline - Set the baseline (the vertical alignment) of text textAlign - Set the horizontal alignment of text Center text both vertically and horizontally

Examples explained

Canvas Shadows

shadowColor - Set shadow color for shapes shadowColor - Set shadow color for text shadowBlur - Set blur amount of shadow for shapes shadowBlur - Set blur amount of shadow for text shadowOffsetX- Set the horizontal distance of the shadow from the shape shadowOffsetY- Set the vertical distance of the shadow from the shape

Examples explained

Canvas Images

drawImage(image, dx, dy) - Position an image on the canvas drawImage(image, dx, dy, dwidth, dheight) - Position an image, and specify the width and height of the image on the canvas drawImage(image, sx, sy, swidth, sheight, dx, dy, dwidth, dheight) - Clip the source image, before it is placed on the canvas

Examples explained

Canvas Transformations

translate() - Move an object/element by x and y translate() - Move an object/element by x and y rotate() - Rotate a rectangle by 20 degrees rotate() - Rotate two rectangles by 20 degrees scale() - Scale element up scale() - Scale element down scale() - Scale width to 200% and height to 300% scale() - Scale with slider transform() - Multiply the current transformation with the matrix described by the arguments setTransform() - Resets the current transformation to the identity matrix, and then run a transformation described by the argument

Examples explained

Canvas Clipping

clip() - Create a circular clipping region. Then draw two rectangles clip() - Create a triangle-shaped clipping region. Then draw two rectangles clip() - Create a circular clipping region. Then draw an image clip() - Create two rectangles as clipping region. Use evenodd rule clip() - Create two rectangles as clipping region. Use nonzero rule

Examples explained

Canvas Compositing

globalCompositeOperation = "source-over" globalCompositeOperation = "source-out" globalCompositeOperation = "destination-over" globalCompositeOperation = "destination-atop" globalCompositeOperation = "lighter" globalCompositeOperation = "copy" globalCompositeOperation = "xor" globalCompositeOperation = "multiply" globalCompositeOperation = "screen" globalCompositeOperation = "darken" globalCompositeOperation = "lighten" globalCompositeOperation = "hue" globalCompositeOperation = "luminosity"

Examples explained


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