Define a gradient that goes from black to white, as the fill style for the rectangle:
JavaScript:
Internet Explorer 9, Firefox, Opera, Chrome, and Safari support the addColorStop() method.
Note: Internet Explorer 8 and earlier versions, do not support the <canvas> element.
The addColorStop() method specifies the colors and position in a gradient object.
The addColorStop() method is used together with createLinearGradient() or createRadialGradient().
Note: You can call the addColorStop() method multiple times to change a gradient. If you omit this method for gradient objects, the gradient will not be visible. You need to create at least one color stop to have a visible gradient.
JavaScript syntax: | gradient.addColorStop(stop,color); |
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Parameter | Description | Play it |
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stop | A value between 0.0 and 1.0 that represents the position between start and end in a gradient | Play it » |
color | A CSS color value to display at the stop position | Play it » |
Define a gradient with multiple addColorStop() methods:
JavaScript: