RenderingContext Canvas.getContext(string contextType, Object contextAttributes)

Gets the drawing context of a canvas object.

Parameters

string contextType

The context type.

Valid values of contextType

Value Description Minimum Version
2d 2D drawing context
webgl WebGL drawing context

Object contextAttributes

The WebGL context property, which is valid only when contextType is WebGL.

Attribute Type Default Required Description
antialias boolean false No Indicates whether to enable antialiasing
preserveDrawingBuffer boolean false No Indicates whether to preserve drawing buffer when drawing is finished
antialiasSamples number 2 No Number of antialiasing samples. Minimum value is 2, and the maximum value is subject to the system limit. This is only available on iOS.

Return Values

RenderingContext

The drawing context.