[bugfix] Field: add hack for iOS 12 scroll position (#3204)

packages/field/index.js

@@ -1,4 +1,4 @@
-import { use, isObj, isDef } from '../utils';
+import { use, isObj, isDef, isIOS } from '../utils';
 import Icon from '../icon';
 import Cell from '../cell';
 import { cellProps } from '../cell/shared';
@@ -102,6 +102,13 @@ export default sfc({
     onBlur(event) {
       this.focused = false;
       this.$emit('blur', event);
+
+      // Hack for iOS12 page scroll
+      // https://developers.weixin.qq.com/community/develop/doc/00044ae90742f8c82fb78fcae56800
+      /* istanbul ignore next */
+      if (isIOS()) {
+        window.scrollTo(0, window.pageYOffset);
+      }
     },
 
     onClickLeftIcon() {

packages/sku/components/SkuMessages.js

@@ -1,4 +1,4 @@
-import { use, isIOS } from '../../utils';
+import { use } from '../../utils';
 import Cell from '../../cell';
 import CellGroup from '../../cell-group';
 import Field from '../../field';
@@ -118,15 +118,6 @@ export default sfc({
           }
         }
       }
-    },
-
-    onBlur() {
-      // 修复 ios12 键盘弹起后点击错位的问题
-      // https://developers.weixin.qq.com/community/develop/doc/00044ae90742f8c82fb78fcae56800
-      /* istanbul ignore next */
-      if (isIOS()) {
-        window.scrollTo(0, 0);
-      }
     }
   },
 
@@ -156,7 +147,6 @@ export default sfc({
             required={String(message.required) === '1'}
             placeholder={this.getPlaceholder(message)}
             type={this.getType(message)}
-            onBlur={this.onBlur}
           />
         )))}
       </CellGroup>