【fix ESLint】src/views/demo、src/utils

jero-web/src/views/demo/ImgDragSort.vue

@@ -2,9 +2,9 @@
   <a-card>
     <draggable @end="end" :options="{animation: 300}" v-model="dataSource" style="display: inline-block">
       <template v-for="(data,index) in dataSource">
-        <div style="float: left;width:150px;height:150px;margin-right: 10px;margin: 0 8px 8px 0;" :key="index">
+        <div style="float: left;width:150px;height:150px;margin: 0 8px 8px 0;" :key="index">
           <div style="width: 100%;height: 100%;position: relative;padding: 8px;border: 1px solid #d9d9d9;border-radius: 4px;">
-            <img style="width: 100%;" :src="data.filePath" preview="index">
+            <img style="width: 100%;" :src="data.filePath" preview="index" alt="">
           </div>
         </div>
       </template>
@@ -61,7 +61,7 @@ export default {
       console.log('拖动后的位置' + evt.newIndex)
     },
     sureChange () {
-      for (var i = 0; i < this.dataSource.length; i++) {
+      for (let i = 0; i < this.dataSource.length; i++) {
         this.dataSource[i].sort = i
       }
       this.newDateSource = this.dataSource