> For the complete documentation index, see [llms.txt](https://api.view-js.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://api.view-js.com/lei-xing/viewbackforwardctrl.md).

# ViewBackForwardCtrl

## 可选选项

* `params: Object | null`\
  视图参数集合。\
  默认值：`null`。
