update

questions/41.绝对布局的隐藏知识点.md

@@ -142,3 +142,43 @@ inset: "4 8" /* top/bottom left/right */
 inset: "5 15 10" /* top left/right bottom */
 inset: "2 3 3 3" /* top right bottom left */
 ```
+
+6. 绝对布局可以和其他布局共存
+
+FineUI中组件render方法支持return对象或者数组,可以利用绝对布局几乎没有副作用的特点,附加一些内容
+
+```
+BI.createWidget({
+    type: "bi.basic_button",
+    width: 200,
+    height: 200,
+    cls: "bi-border",
+    render: () => {
+        return [
+            {
+                type: "bi.center_adapt",
+                items: [
+                    {
+                        type: "bi.button",
+                        text: "居中",
+                    },
+                ],
+            }, {
+                type: "bi.absolute",
+                items: [
+                    {
+                        el: {
+                            type: "bi.button",
+                            text: "左上角",
+                        },
+                        top: 10,
+                        right: 10,
+                    },
+                ],
+            },
+        ];
+    },
+});
+```
+
+![示例](../images/10.png)