From cd3cc07254baad6be86d3878c904b260e06c871e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E9=99=88=E5=98=89=E6=B6=B5?= <chenjiahan@youzan.com>
Date: Wed, 29 Jan 2020 15:39:05 +0800
Subject: [PATCH] feat(Picker): default-index can be string

---
 src/picker/README.md       | 2 +-
 src/picker/README.zh-CN.md | 2 +-
 src/picker/index.js        | 6 +++---
 3 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/src/picker/README.md b/src/picker/README.md
index 20d56cd13..ca4e4c6be 100644
--- a/src/picker/README.md
+++ b/src/picker/README.md
@@ -267,7 +267,7 @@ export default {
 | loading | Whether to show loading prompt | *boolean* | `false` |
 | show-toolbar | Whether to show toolbar | *boolean* | `false` |
 | allow-html `v2.1.8` | Whether to allow HTML in option text | *boolean* | `true` |
-| default-index | Default value index of single column picker | *number* | `0` |
+| default-index | Default value index of single column picker | *number \| string* | `0` |
 | item-height | Option height | *number \| string* | `44` |
 | visible-item-count | Count of visible columns | *number \| string* | `5` |
 | swipe-duration `v2.2.10` | Duration of the momentum animation，unit `ms` | *number \| string*  | `1000` |
diff --git a/src/picker/README.zh-CN.md b/src/picker/README.zh-CN.md
index 4c7bb4d08..aff6c460a 100644
--- a/src/picker/README.zh-CN.md
+++ b/src/picker/README.zh-CN.md
@@ -281,7 +281,7 @@ export default {
 | loading | 是否显示加载状态 | *boolean* | `false` |
 | show-toolbar | 是否显示顶部栏 | *boolean* | `false` |
 | allow-html `v2.1.8` | 是否允许选项内容中渲染 HTML | *boolean* | `true` |
-| default-index | 单列选择时，默认选中项的索引 | *number* | `0` |
+| default-index | 单列选择时，默认选中项的索引 | *number \| string* | `0` |
 | item-height | 选项高度 | *number \| string* | `44` |
 | visible-item-count | 可见的选项个数 | *number \| string* | `5` |
 | swipe-duration `v2.2.10` | 快速滑动时惯性滚动的时长，单位`ms` | *number \| string*  | `1000` |
diff --git a/src/picker/index.js b/src/picker/index.js
index f0217a74f..37ddf2abd 100644
--- a/src/picker/index.js
+++ b/src/picker/index.js
@@ -14,7 +14,7 @@ export default createComponent({
   props: {
     ...pickerProps,
     defaultIndex: {
-      type: Number,
+      type: [Number, String],
       default: 0,
     },
     columns: {
@@ -81,7 +81,7 @@ export default createComponent({
       let cursor = { children: this.columns };
 
       while (cursor && cursor.children) {
-        const defaultIndex = cursor.defaultIndex || this.defaultIndex;
+        const defaultIndex = cursor.defaultIndex || +this.defaultIndex;
 
         formatted.push({
           values: cursor.children.map(item => item[this.valueKey]),
@@ -270,7 +270,7 @@ export default createComponent({
           allowHtml={this.allowHtml}
           className={item.className}
           itemHeight={this.itemHeight}
-          defaultIndex={item.defaultIndex || this.defaultIndex}
+          defaultIndex={item.defaultIndex || +this.defaultIndex}
           swipeDuration={this.swipeDuration}
           visibleItemCount={this.visibleItemCount}
           initialOptions={item.values}