banner图大小限制

src/views/proof/components/AddBanner.vue

@@ -86,6 +86,10 @@ export default class AddBanner extends Vue {
       this.$toast("最多上传4张banner图");
       return;
     }
+    if (e.target.files[0].size > 2* 1024 * 1024) {
+      this.$toast("文件大小限制2M");
+      return;
+    }
     (this.$refs.cropper as any).loadFile(e.target.files[0]);
     e.target.value = '';
   }