code review

docs/examples-docs/loading.md

@@ -1,49 +1,83 @@
 <style>
-.demo-loading__example{
-  width: 30px;
-  height: 30px;
-  padding: 20px;
-  margin: auto;
-  border-radius: 5px;
-  border: 1px solid transparent;
-}
+@component-namespace demo {
+  @b loading {
+    .zan-loading {
+      margin: 0 auto;
+    }
 
-.demo-loading__example--with-bg {
-  background-color: rgba(0, 0, 0, 0.5);
-}
+    .circle-loading {
+      margin: 20px auto;
+    }
 
-.demo-loading {
-  padding: 0 20px;
+    .demo-loading__example--with-bg {
+      background-color: rgba(0, 0, 0, 0.5);
+      margin-bottom: 10px;
+    }
+  }
 }
 </style>
 
 ## Loading 加载
 
-### 基础用法
+### 使用指南
 
-:::demo 基础用法
+如果你已经按照[快速上手](/vue/component/quickstart)中引入了整个`ZanUI`，以下**组件注册**就可以忽略了，因为你已经全局注册了`ZanUI`中的全部组件。
+
+#### 全局注册
+
+你可以在全局注册`Loading`组件，比如页面的主文件（`index.js`，`main.js`），这样页面任何地方都可以直接使用`Loading`组件了：
+
+```js
+import Vue from 'vue';
+import { Loading } from '@youzan/zanui-vue';
+import '@youzan/zanui-vue/lib/zanui-css/loading.css';
+
+Vue.component(Loading.name, Loading);
+```
+
+#### 局部注册
+
+如果你只是想在某个组件中使用，你可以在对应组件中注册`Loading`组件，这样只能在你注册的组件中使用`Loading`：
+
+```js
+import { Loading } from '@youzan/zanui-vue';
+
+export default {
+  components: {
+    'zan-loading': Loading
+  }
+};
+```
+
+### 代码演示
+
+#### 渐变深色spinner
+
+:::demo 渐变深色spinner
 ```html
-<div class="demo-loading">
-  <h2 class="demo-sub-title">渐变深色spinner</h2>
-  <div class="demo-loading__example">
-    <zan-loading class="some-customized-class"></zan-loading>
-  </div>
-  <h2 class="demo-sub-title">渐变浅色spinner</h2>
-  <div class="demo-loading__example demo-loading__example--with-bg">
-    <zan-loading class="some-customized-class" :color="'white'"></zan-loading>
-  </div>
-  <h2 class="demo-sub-title">单色spinner</h2>
-  <div class="demo-loading__example">
-    <zan-loading class="some-customized-class" :type="'circle'" :color="'white'"></zan-loading>
-  </div>
-  <h2 class="demo-sub-title">单色spinner</h2>
-  <div class="demo-loading__example">
-    <zan-loading class="some-customized-class" :type="'circle'" :color="'black'"></zan-loading>
-  </div>
+<zan-loading class="some-customized-class"></zan-loading>
+```
+:::
+
+#### 渐变浅色spinner
+
+:::demo
+```html
+<div class="demo-loading__example demo-loading__example--with-bg">
+  <zan-loading class="some-customized-class" :color="'white'"></zan-loading>
 </div>
 ```
 :::
 
+#### 单色spinner
+
+:::demo
+```html
+<zan-loading class="circle-loading" :type="'circle'" :color="'white'"></zan-loading>
+<zan-loading class="circle-loading" :type="'circle'" :color="'black'"></zan-loading>
+```
+:::
+
 ### API
 
 | 参数       | 说明      | 类型       | 默认值       | 可选值       |