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determines whether to use the canvas API, WebGL, or WebGL2 rendering context.

Example

The following code creates a element in an HTML page:This text is displayed if your browser does not support HTML canvas element.

Using JavaScript, you can draw on the canvas:var example = document.getElementById('example');var context = example.getContext('2d');context.fillStyle = 'red';context.fillRect(30, 30, 50, 50);

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