ImageData.width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SpecificationHTML Standard # dom-imagedata-width-dev浏览器兼容性BCD tables only load in the browser with JavaScript enabled. Enable JavaScript to view data.参见 ImageData.height