update: click--》hover

src/views/card/form.vue

@@ -15,7 +15,7 @@
       </el-form-item>
       <el-form-item label="展示适用渠道文案" prop="channelTip">
         <dm-input v-model="form.channelTip" class="w400" placeholder="请输入小程序端展示的适用渠道文案" :byteType="1" :maxlength="18"></dm-input>
-        <el-popover placement="right" width="360" trigger="click">
+        <el-popover placement="right" width="360" trigger="hover">
           <img :src="require('@/assets/img/coupon-preview.png')" alt="" style="display:block" />
           <el-button slot="reference" type="text" class="ml10">查看示例</el-button>
         </el-popover>