在此页

• 句法
• 范例
• 规范
• 浏览器兼容性
• 另请参阅
• 相关话题

CanvasRenderingContext2D .font property of the Canvas 2D API specifies the current text style to use when drawing text. This string uses the same syntax as the CSS font specifier.

句法

ctx.font = value;
					

选项

value

DOMString parsed as CSS font value. The default font is 10px sans-serif.

范例

Using a custom font

In this example we use the font property to specify a custom font weight, size, and family.

HTML

<canvas id="canvas"></canvas>
					

JavaScript

const canvas = document.getElementById('canvas');
const ctx = canvas.getContext('2d');
ctx.font = 'bold 48px serif';
ctx.strokeText('Hello world', 50, 100);
					

结果

Loading fonts with the CSS Font Loading API

With the help of the FontFace API, you can explicitly load fonts before using them in a canvas.

let f = new FontFace('test', 'url(x)');
f.load().then(function() {
  // Ready to use the font in a canvas context
});
					

规范

规范	状态	注释
HTML 实时标准 The definition of 'CanvasRenderingContext2D.font' 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
font	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

图例

完整支持

完整支持

Gecko-specific notes

• In Gecko-based browsers, such as Firefox, a non-standard and deprecated property ctx.mozTextStyle is implemented besides this property. Use ctx.font 代替。
• In Gecko, when setting a system font as the value of a canvas 2D context's font (如， menu ), getting the font value used to fail to return the expected font (it returns nothing). This is fixed in Firefox's Quantum/Stylo parallel CSS engine, released in Firefox 57 ( bug 1374885 ).

另请参阅

• The interface defining this property: CanvasRenderingContext2D

元数据

• 最后修改： Aug 23, 2019

相关话题

1. CanvasRenderingContext2D
2. 特性

   1. canvas
   2. currentTransform
   3. direction
   4. fillStyle
   5. filter
   6. font
   7. globalAlpha
   8. globalCompositeOperation
   9. imageSmoothingEnabled
   10. imageSmoothingQuality
   11. lineCap
   12. lineDashOffset
   13. lineJoin
   14. lineWidth
   15. miterLimit
   16. shadowBlur
   17. shadowColor
   18. shadowOffsetX
   19. shadowOffsetY
   20. strokeStyle
   21. textAlign
   22. textBaseline
3. 方法

   1. addHitRegion()
   2. arc()
   3. arcTo()
   4. beginPath()
   5. bezierCurveTo()
   6. clearHitRegions()
   7. clearRect()
   8. clip()
   9. closePath()
   10. createImageData()
   11. createLinearGradient()
   12. createPattern()
   13. createRadialGradient()
   14. drawFocusIfNeeded()
   15. drawImage()
   16. drawWidgetAsOnScreen()
   17. drawWindow()
   18. ellipse()
   19. fill()
   20. fillRect()
   21. fillText()
   22. getImageData()
   23. getLineDash()
   24. getTransform()
   25. isPointInPath()
   26. isPointInStroke()
   27. lineTo()
   28. measureText()
   29. moveTo()
   30. putImageData()
   31. quadraticCurveTo()
   32. rect()
   33. removeHitRegion()
   34. resetTransform()
   35. restore()
   36. rotate()
   37. save()
   38. scale()
   39. scrollPathIntoView()
   40. setLineDash()
   41. setTransform()
   42. stroke()
   43. strokeRect()
   44. strokeText()
   45. transform()
   46. translate()