The readonly ImageData.width property returns the number of pixels per row in the ImageData object. 
 The readonly ImageData.width property returns the number of pixels per row in the ImageData object. 
A number.
 This example creates an ImageData object that is 200 pixels wide and 100 pixels tall. Thus, the width property is 200. 
js
let imageData = new ImageData(200, 100); console.log(imageData.width); // 200
| Specification | 
|---|
| HTML Standard  # dom-imagedata-width-dev  | 
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
width | 
1 | 12 | 3.5 | 9 | 9 | 3.1 | ≤37 | 18 | 4 | 10.1 | 2 | 1.0 | 
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    https://developer.mozilla.org/en-US/docs/Web/API/ImageData/width