Update Dropzone.vue

checksum is the best solution,but us a different tail number is more simple, if Math.random() may return a repeat number, we can also use new Date() and its getTime() function instead of Math.random(), because all times a different, so this can avoid the same number repeat.

I renew my pull request above.

admin-dev/themes/new-theme/js/pages/product/components/dropzone/Dropzone.vue

@@ -494,7 +494,8 @@
           const imageElement = document.querySelector(
             DropzoneMap.savedImage(newImage.image_id),
           );
-          imageElement.src = newImage.image_url + '?' + Math.random();
+          var imageUpdateTime = new Date();
+          imageElement.src = newImage.image_url + '?' + imageUpdateTime.getTime();
 
           $.growl({message: this.$t('window.imageReplaced')});
           this.buttonLoading = false;