Canvas shadowBlur eigenschap
Definitie en gebruik
shadowBlur Instellen of retourneren van de vaagheid van de schaduw.
Voorbeeld
Teken een blauwe rechthoek met een zwart schaduw, de vaagheid is 20:
JavaScript:
var c=document.getElementById("myCanvas");
var ctx=c.getContext("2d");
ctx.shadowBlur=20;
ctx.shadowColor="black";
ctx.fillStyle="blue";
ctx.fillRect(20,20,100,80);
语法
context.shadowBlur=number;
Attribute value
| Value | Description |
|---|---|
| number | The blur level of the shadow. |
Technical details
| Default value: | #000000 |
|---|
Browser support
The numbers in the table indicate the first browser version that fully supports this property.
| Chrome | Edge | Firefox | Safari | Opera |
|---|---|---|---|---|
| Chrome | Edge | Firefox | Safari | Opera |
| 4.0 | 9.0 | 3.6 | 4.0 | 10.1 |
Note:Internet Explorer 8 and earlier versions do not support the <canvas> element.
