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画布 lineWidth 属性

❮ 画布参考

示例

绘制一条 lineWidth 为 10 像素的线

您的浏览器不支持 HTML5 画布标签。

JavaScript

const canvas = document.getElementById("myCanvas");
const ctx = canvas.getContext("2d");
ctx.lineWidth = 10;

// 开始新路径
ctx.beginPath();
ctx.moveTo(0, 100);
ctx.lineTo(200, 100);

// 绘制路径
ctx.stroke();
亲自试一试 »

更多示例如下。


描述

The lineWidth 属性设置或返回当前线宽,以像素为单位。

默认值为 1 像素。

另请参阅

strokeStyle 属性(设置描边颜色/样式)

beginPath() 方法(开始新路径)

moveTo() 方法(将路径移动到一个点)

lineTo() 方法(向路径添加一条线)

stroke() 方法(绘制当前路径)

strokeRect() 方法(绘制一个矩形)


语法

context.lineWidth = number

属性值

描述 播放它
number 当前线宽,以像素为单位 播放它 »

示例

绘制一个 lineWidth 为 10 像素的矩形

您的浏览器不支持 HTML5 画布标签。

JavaScript

const canvas = document.getElementById("myCanvas");
const ctx = canvas.getContext("2d");

ctx.lineWidth = 10;
ctx.strokeRect(20, 20, 80, 100);
亲自试一试 »

浏览器支持

The <canvas> 元素是 HTML5 标准 (2014)。

lineWidth 在所有现代浏览器中受支持

Chrome Edge Firefox Safari Opera IE
9-11

❮ 画布参考
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