调整$refs获取Element写法

pages/template/pull-zoom-image/pull-zoom-image.uvue

@@ -25,7 +25,7 @@
 
     <view slot="refresher">
       <view class="head-img-box-1">
-        <image class="img" ref="head-img-1" src="../../../static/template/pull-zoom-image/head-img.jpg" mode="scaleToFill"></image>
+        <image class="img" ref="head-img-1" src="/static/template/pull-zoom-image/head-img.jpg" mode="scaleToFill"></image>
       </view>
     </view>
 
@@ -64,7 +64,7 @@
       setElementStyle(refName : string, propertyName : string, propertyStyle : any) : void {
         let element : Element | null = this.$elementMap.get(refName)
         if (element == null) {
-          element = this.$refs[refName] as Element;
+          element = this.$refs.get(refName) as Element;
           this.$elementMap.set(refName, element)
         }
         element.style.setProperty(propertyName, propertyStyle);