Orange

一点小问题，这两个代码不等价

2

前者是传的是传假值或者不传值取后面；后者是不传值取默认，感觉例子可以优化下。。 

**What kind of change does this PR introduce?** (check at least one) - [ ] Bugfix - [ ] Feature - [ ] Code style update - [ ] Refactor...

- 项目名称：awesome-javascript-ui-kit-library - 项目地址：[https://github.com/woshiqiang1/awesome-javascript-ui-kit-library](https://github.com/woshiqiang1/awesome-javascript-ui-kit-library) - 项目简介：Awesome lists about high quality javascript UI-kit library，include PC、Mobile(WebApp、React-Native)