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• 句法
• 范例
• 规范
• 浏览器兼容性
• 另请参阅
• 相关话题

CanvasRenderingContext2D .fillRect() method of the Canvas 2D API draws a rectangle that is filled according to the current fillStyle .

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.

句法

void ctx.fillRect(x, y, width, height);
					

fillRect() method draws a filled rectangle whose starting point is at (x, y) and whose size is specified by width and height . The fill style is determined by the current fillStyle 属性。

参数

x

The x-axis coordinate of the rectangle's starting point.

y

The y-axis coordinate of the rectangle's starting point.

width

The rectangle's width. Positive values are to the right, and negative to the left.

height

The rectangle's height. Positive values are down, and negative are up.

范例

A simple filled rectangle

This example draws a filled green rectangle using the fillRect() 方法。

HTML

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

JavaScript

The rectangle's top-left corner is at (20, 10). It has a width of 150 and a height of 100.

const canvas = document.getElementById('canvas');
const ctx = canvas.getContext('2d');
ctx.fillStyle = 'green';
ctx.fillRect(20, 10, 150, 100);
					

结果

Filling the whole canvas

This code snippet fills the entire canvas with a rectangle. This is often useful for creating a background, on top of which other things may then be drawn. To achieve this, the dimensions of the rectangle are set to equal the <canvas> 元素的 width and height 属性。

const canvas = document.getElementById('canvas');
const ctx = canvas.getContext('2d');
ctx.fillRect(0, 0, canvas.width, canvas.height);
					

规范

规范	状态	注释
HTML 实时标准 The definition of 'CanvasRenderingContext2D.fillRect' 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
fillRect	Chrome 1	Edge 12	Firefox 1.5	IE 9	Opera 9	Safari 2	WebView Android 1	Chrome Android 18	Firefox Android 4	Opera Android 10.1	Safari iOS 1	Samsung Internet Android 1.0

图例

完整支持

完整支持

另请参阅

• The interface defining this method: CanvasRenderingContext2D
• CanvasRenderingContext2D.fillStyle
• CanvasRenderingContext2D.clearRect()
• CanvasRenderingContext2D.strokeRect()

元数据

• 最后修改： 2019 年 3 月 23 日

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()