feat(h5): previewImage 参数 current 支持传入索引值

src/core/helpers/protocol/media/preview-image.js

@@ -19,9 +19,11 @@ export const previewImage = {
     }
   },
   current: {
-    type: String,
+    type: [String, Number],
     validator (value, params) {
-      params.type = value ? getRealPath(value) : ''
+      // 假值都会被转换为数字 0 无需再做判定
+      const index = Number(value)
+      params.current = isNaN(index) ? getRealPath(value) : index
     }
   }
 }

src/platforms/h5/components/system-routes/preview-image/index.vue

@@ -33,7 +33,7 @@ export default {
     }
   },
   created () {
-    var index = this.urls.indexOf(this.current)
+    const index = typeof this.current === 'number' ? this.current : this.urls.indexOf(this.current)
     this.index = index < 0 ? 0 : index
   },
   methods: {