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shadowOffsetY ist eine Eigenschaft von Canvas 2Das D API beschreibt die Eigenschaft, die den vertikalen Abstand des Schattens definiert.
Zeichnen Sie einen Schatten unterhalb der oberen Kante des Rechtecks20 Pixel breiter Rechteck:
Verwendung der shadowOffsetY-Eigenschaft:
<!DOCTYPE html> <html> <head> <title>Verwendung der HTML canvas shadowOffsetY-Eigenschaft (Grundtutorials.net oldtoolbag.com)</<title> </<head> <body> <canvas id="myCanvas" width="300" height="150" style="border:1px fest #d3d3d3> Ihr Browser unterstützt keine HTML5 canvas-Tag. </canvas> <script> var c=document.getElementById("myCanvas"); var ctx=c.getContext("2d"); ctx.shadowBlur=10; ctx.shadowOffsetY=20; ctx.shadowColor="black"; ctx.fillStyle="red"; ctx.fillRect(20,20,100,80); </script> </body> </html>Test it out ‹/›
IEFirefoxOperaChromeSafari
Internet Explorer 9Firefox, Opera, Chrome and Safari support the shadowOffsetY attribute.
Note:Internet Explorer 8 And earlier versions do not support the <canvas> element.
The shadowOffsetY property sets or returns the vertical distance of the shadow from the shape.
shadowOffsety = 0 indicates that the shadow is exactly behind the shape.
shadowOffsetY = 20 indicates that the shadow starts below the top position of the shape20 pixels.
shadowOffsetY =-20 indicates that the shadow starts above the top position of the shape20 pixels.
Tip:To adjust the horizontal distance of the shadow from the shape, please use shadowOffsetX Attribute.
Default Value: | 0 |
---|---|
JavaScript Syntax: | context.shadowOffsetY=number; |
Value | Description |
---|---|
number | Positive or negative value, defines the vertical distance of the shadow from the shape. |