HTML canvas strokeStyle property
Examples
Draw a rectangle. Red color with a stroke:
JavaScript:
var c=document.getElementById("myCanvas");
var ctx=c.getContext("2d");
ctx.strokeStyle="#FF0000";
ctx.strokeRect(20,20,150,100);
var ctx=c.getContext("2d");
ctx.strokeStyle="#FF0000";
ctx.strokeRect(20,20,150,100);
try it"
Browser Support
Internet Explorer 9, Firefox, Opera, Chrome and Safari support strokeStyle property.
Note: 8 and earlier versions of Internet Explorer do not support the <canvas> element.
Definition and Usage
strokeStyle property sets or returns the color, gradient, or pattern for stroke.
Defaults: | # 000000 |
---|---|
JavaScript syntax: | context .strokeStyle = color | gradient | pattern; |
Property Value
值 | 描述 |
---|---|
color | 指示绘图笔触颜色的 CSS 颜色值 。默认值是 #000000。 |
gradient | 用于填充绘图的渐变对象( 线性 或 放射性 )。 |
pattern | 用于创建 pattern 笔触的 pattern 对象。 |
More examples
Examples
Draw a rectangle. Use a gradient stroke:
JavaScript:
var c=document.getElementById("myCanvas");
var ctx=c.getContext("2d");
var gradient=ctx.createLinearGradient(0,0,170,0);
gradient.addColorStop("0","magenta");
gradient.addColorStop("0.5","blue");
gradient.addColorStop("1.0","red");
// Fill with gradient
ctx.strokeStyle=gradient;
ctx.lineWidth=5;
ctx.strokeRect(20,20,150,100);
var ctx=c.getContext("2d");
var gradient=ctx.createLinearGradient(0,0,170,0);
gradient.addColorStop("0","magenta");
gradient.addColorStop("0.5","blue");
gradient.addColorStop("1.0","red");
// Fill with gradient
ctx.strokeStyle=gradient;
ctx.lineWidth=5;
ctx.strokeRect(20,20,150,100);
try it"
Examples
With a gradient stroke to write the text "Big smile!":
JavaScript:
var c=document.getElementById("myCanvas");
var ctx=c.getContext("2d");
ctx.font="30px Verdana";
// Create gradient
var gradient=ctx.createLinearGradient(0,0,c.width,0);
gradient.addColorStop("0","magenta");
gradient.addColorStop("0.5","blue");
gradient.addColorStop("1.0","red");
// Fill with gradient
ctx.strokeStyle=gradient;
ctx.strokeText("Big smile!",10,50);
var ctx=c.getContext("2d");
ctx.font="30px Verdana";
// Create gradient
var gradient=ctx.createLinearGradient(0,0,c.width,0);
gradient.addColorStop("0","magenta");
gradient.addColorStop("0.5","blue");
gradient.addColorStop("1.0","red");
// Fill with gradient
ctx.strokeStyle=gradient;
ctx.strokeText("Big smile!",10,50);
try it"
HTML canvas Reference Manual