update

2020-02-11 14:17:37 +08:00 · 2020-02-11 14:17:37 +08:00 · df49674cf5
commit df49674cf5
parent 2b623a0970
1 changed files with 4 additions and 1 deletions
--- a/前端/前端通过页面(dom)生成图片并放大倍数.md
+++ b/前端/前端通过页面(dom)生成图片并放大倍数.md
@ -35,4 +35,7 @@ console.log(canvas2.style.width)
 ```
 html2canvas参数参考官网 重点介绍canvas那一部分
 context.scale(x 倍数, y 倍数); //画板放大指定倍数
- 
+
+canvas2.width = w * times  * window.devicePixelRatio; //指定画板宽度
+canvas2.height = h * times  * window.devicePixelRatio; //指定画板宽度
+