Page add key to resolve warning about wx:for

Author: icarusion

src/page/index.wxml

@@ -6,7 +6,7 @@
         <view class="i-page-number-current">{{ current }}</view>/{{total}}
     </view>
     <view class="i-page-pointer" wx:if="{{ mode === 'pointer' }}">
-        <view class="i-page-pointer-dot {{ (index + 1) === current ? 'current' : '' }}" wx:for="{{ total }}"></view>
+        <view class="i-page-pointer-dot {{ (index + 1) === current ? 'current' : '' }}" wx:for="{{ total }}" wx:key="index"></view>
     </view>
     <view class="i-page-next" wx:if="{{ mode === 'button' }}">
         <i-button i-class="i-page-button" type="ghost" bindclick="handleNext" disabled="{{ current === total }}"><slot name="next"></slot></i-button>