CanvasRenderingContext2D.fillText()

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句法
范例
规范
浏览器兼容性
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CanvasRenderingContext2D 方法 fillText() , part of the Canvas 2D API, draws a text string at the specified coordinates, filling the string's characters with the current fillStyle . An optional parameter allows specifying a maximum width for the rendered text, which the 用户代理 will achieve by condensing the text or by using a lower font size.

This method draws directly to the canvas without modifying the current path, so any subsequent fill() or stroke() calls will have no effect on it.

The text is rendered using the font and text layout configuration as defined by the font , textAlign , textBaseline ，和 direction 特性。

To draw the outlines of the characters in a string, call the context's strokeText() 方法。

句法

CanvasRenderingContext2D.fillText(text, x, y [, maxWidth]);

参数

text: DOMString specifying the text string to render into the context. The text is rendered using the settings specified by font , textAlign , textBaseline ，和 direction .
x
y
maxWidth 可选

返回值

undefined .

范例

Drawing filled text

This example writes the words "Hello world" using the fillText() 方法。

HTML

First, we need a canvas to draw into. This code creates a context 400 pixels wide and 150 pixels across.

<canvas id="canvas" width="400" height="150"></canvas>

JavaScript

The JavaScript code for this example follows.

const canvas = document.getElementById('canvas');
const ctx = canvas.getContext('2d');
ctx.font = '50px serif';
ctx.fillText('Hello world', 50, 90);

This code obtains a reference to the <canvas> , then gets a reference to its 2D graphics context.

With that in hand, we set the font to 50-pixel-tall "serif" (the user's default serif font), then call fillText() to draw the text "Hello world," starting at the coordinates (50, 90).

结果

Restricting the text size

This example writes the words "Hello world," restricting its width to 140 pixels.

HTML

<canvas id="canvas" width="400" height="150"></canvas>

JavaScript

const canvas = document.getElementById('canvas');
const ctx = canvas.getContext('2d');
ctx.font = '50px serif';
ctx.fillText('Hello world', 50, 90, 140);

结果

规范

规范	状态	注释
HTML 实时标准 The definition of 'CanvasRenderingContext2D.fillText' in that specification.	实时标准

浏览器兼容性

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据

	桌面						移动
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`fillText`	Chrome Yes	Edge 12	Firefox 3.5	IE 9	Opera Yes	Safari Yes	WebView Android Yes	Chrome Android Yes	Firefox Android 4	Opera Android Yes	Safari iOS Yes	Samsung Internet Android Yes

在此页

句法

参数

返回值

范例

Drawing filled text

HTML

JavaScript

结果

Restricting the text size

HTML

JavaScript

结果

规范

浏览器兼容性

图例

另请参阅

元数据

相关话题