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Canvas textAlign 属性

❮ Canvas 参考资料

示例

在位置 150 处创建一条红色线。位置 150 是下面示例中定义的所有文本的锚点。研究每个 textAlign 属性值的效用。

YourbrowserdoesnotsupporttheHTML5canvastag.

JavaScript

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

// 在位置 150 处创建一条红色线
ctx.strokeStyle = "red";
ctx.moveTo(150, 20);
ctx.lineTo(150, 170);
ctx.stroke();

ctx.font = "15px Arial";

// 显示不同的 textAlign 值
ctx.textAlign = "start";
ctx.fillText("textAlign = start", 150, 60);
ctx.textAlign = "end";
ctx.fillText("textAlign = end", 150, 80);
ctx.textAlign = "left";
ctx.fillText("textAlign = left", 150, 100);
ctx.textAlign = "center";
ctx.fillText("textAlign = center", 150, 120);
ctx.textAlign = "right";
ctx.fillText("textAlign = right", 150, 140);
亲自试一试 »

描述

The textAlign 属性根据锚点设置或返回文本内容的当前对齐方式。

默认值为 start

另请参阅

font 属性(设置文本字体和大小)

fillStyle 属性(设置文本颜色/渐变)

textBaseline 属性(设置文本基线)

fillText() 方法(绘制文本)

strokeText() 方法(绘制文本)


语法

context.textAlign = "center|end|left|right|start"

属性值

描述 播放
start 文本开始位置 播放 »
end 文本结束位置 播放 »
center 文本中心位置 播放 »
left 文本开始位置 播放 »
right 文本结束位置 播放 »

浏览器支持

The <canvas> 元素是 HTML5 标准(2014 年)。

textAlign 在所有现代浏览器中都受支持。

Chrome Edge Firefox Safari Opera IE
9-11

❮ Canvas 参考资料
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