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。
语法
imagedata.width
示例
var imagedata = new ImageData(100, 100); imagedata.width // 100
规范描述
| Specification | Status | Comment |
|---|---|---|
| HTML Living Standard ImageData.width |
Living Standard |
浏览器兼容性
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| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|
| Basic support | (Yes) | 14 (14) | 9.0 | 9.0 | 3.1 |
| Feature | Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|
| Basic support | (Yes) | 14.0 (14) | (Yes) | (Yes) | (Yes) |