update

前端/前端通过页面(dom)生成图片并放大倍数.md

@@ -1,3 +1,4 @@
+### 代码
 ```
 var canvas2 = document.createElement("canvas");
 var _canvas = document.getElementById('app');
@@ -20,7 +21,7 @@ console.log(canvas2.style.width)
         background: null,
         windowWidth:document.body.scrollWidth,
         windowHeight:document.body.scrollHeight,
-        x:(document.body.scrollWidth - width) / 2,
+        x:0,
         y:0
     }).then(canvas => {
         let imgUrl = `<img style="width:100%" src="${canvas.toDataURL()}" />`
@@ -31,4 +32,5 @@ console.log(canvas2.style.width)
     });
     }
 })
-```
+```
+html2canvas