2018年7月8日 一、canvas width/height HTML属性值合法性. 我们可以使用 width 和 height 这两 个HTML属性控制 元素的尺寸。 从定义 

Eventually, we'll just use a canvas that is  要想将图片放入画布里，我们使用canvas元素的 drawImage 方法： createElement("canvas"); canvas.width = image.width; canvas.height = image. height; canvas. 未来web浏览技术提前体验：10个会让你惊叹不已的HTML5画布 (canvas)技术  The one-page guide to Canvas: usage, examples, links, snippets, and more. dx , dy, [dw, dh]); /* `image` can be HTML Image/Canvas/Video */. See MDN:  Graphics generated in real-time on a web page (as opposed to the display of a picture) are always drawn into a rectangular HTML canvas element. A canvas  Example: Create an Html5-Canvas element using both Html5 markup and JavaScript: