🎨 Add kernel API /api/block/getChildBlocks Fix https://github.com/siyuan-note/siyuan/issues/8249

API_zh_CN.md

@@ -29,6 +29,7 @@
     * [删除块](#删除块)
     * [移动块](#移动块)
     * [获取块 kramdown 源码](#获取块-kramdown-源码)
+    * [获取子块](#获取子块)
 * [属性](#属性)
     * [设置块属性](#设置块属性)
     * [获取块属性](#获取块属性)
@@ -762,6 +763,44 @@
   }
   ```
 
+### 获取子块
+
+* `/api/block/getChildBlocks`
+* 参数
+
+  ```json
+  {
+    "id": "20230506212712-vt9ajwj"
+  }
+  ```
+
+  * `id`：父块 ID
+  * 标题下方块也算作子块
+* 返回值
+
+  ```json
+  {
+    "code": 0,
+    "msg": "",
+    "data": [
+      {
+        "id": "20230512083858-mjdwkbn",
+        "type": "h",
+        "subType": "h1"
+      },
+      {
+        "id": "20230513213727-thswvfd",
+        "type": "s"
+      },
+      {
+        "id": "20230513213633-9lsj4ew",
+        "type": "l",
+        "subType": "u"
+      }
+    ]
+  }
+  ```
+
 ## 属性
 
 ### 设置块属性