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ImageData.width - Web API | MDN

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1. 面向开发者的 Web 技术
2. Web API
3. ImageData
4. ImageData.width

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• 语法
• 示例
• 规范
• 浏览器兼容性
• 参见

1. Canvas API
2. ImageData
3. 构造函数
   1. ImageData()
4. 实例属性
   1. colorSpace
   2. data
   3. height
   4. pixelFormat 实验性
   5. width
5. Canvas API 的相关页面
   1. CanvasGradient
   2. CanvasPattern
   3. CanvasRenderingContext2D
   4. HTMLCanvasElement
   5. ImageBitmap
   6. ImageBitmapRenderingContext
   7. OffscreenCanvas
   8. OffscreenCanvasRenderingContext2D
   9. Path2D
   10. TextMetrics
   11. Window.createImageBitmap()
   12. WorkerGlobalScope.createImageBitmap()
6. 指南
   1. 使用 canvas 处理视频
7. 教程
   1. Canvas 教程
   2. Canvas 的基本用法
   3. 使用 canvas 来绘制图形
   4. 应用样式和色彩
   5. 绘制文本
   6. 使用图像
   7. 变形 Transformations
   8. 组合 Compositing
   9. 基本的动画
   10. 高级动画
   11. 像素操作
   12. canvas 的优化
   13. 终曲

• 语法
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Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

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只读的 ImageData.width 属性，返回在图像数据对象中每一行像素的数量。

imagedata.width

js

var imagedata = new ImageData(100, 100);
imagedata.width; // 100

• ImageData.height

.

This page was last modified on 2023年7月29日 by MDN contributors.

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