Area

Intro

The Picker component is usually used with Popup Component.

Install

import Vue from 'vue';
import { Area } from 'vant';

Vue.use(Area);

Usage

Basic Usage

To initailize Area component, area-list property is required. Data structure will be introduced later.

<van-area :area-list="areaList" />

Initial Value

To have a selected value，simply pass the code of target area to value property.

<van-area :area-list="areaList" value="110101" />

Columns Number

columns-num property is used to config number of columns to be displayed. This component has 3 columns corresponding to a 3 level picker by default. Set columns-num with 2, you'll have a 2 level picker.

<van-area :area-list="areaList" :columns-num="2" title="Title" />

Columns Placeholder

columns-placeholder property is used to config placeholder of columns.

<van-area
  :area-list="areaList"
  :columns-placeholder="['Choose', 'Choose', 'Choose']"
  title="Title"
/>

API

Props

Attribute	Description	Type	Default
value	the code of selected area	string	-
title	Toolbar title	string	-
confirm-button-text	Text of confirm button	string	Confirm
cancel-button-text	Text of cancel button	string	Cancel
area-list	Area list data	object	-
columns-placeholder v2.2.5	Placeholder of columns	string[]	[]
loading	Whether to show loading prompt	boolean	false
item-height	Option height	number | string	44
columns-num	Level of picker	number | string	3
visible-item-count	Count of visible columns	number | string	5
swipe-duration v2.2.13	Duration of the momentum animation，unit ms	number | string	1000
is-oversea-code v2.1.4	The method to validate oversea code	() => boolean	-

Events

Event	Description	Arguments
confirm	triggers when clicking the confirm button	an array
cancel	triggers when clicking the cancel button	-
change	Triggered when current option changed	Picker instance, current values，column index

Slots

Name	Description
title v2.5.3	Custom title
columns-top v2.5.3	Custom content above columns
columns-bottom v2.5.3	Custom content below columns

Methods

Use ref to get Area instance and call instance methods

Name	Description	Attribute	Return value
reset	Reset all options by code	code?: string	-

areaList Data Structure

An object contains three properties: province_list, city_list and county_list. Each property is a simple key-value object, key is a 6-bit code of the area of which first two bits stand for the province or state, middle two bits are used as city code and the last two are district code, value is the name of the area. If the code stands for an area that has sub-areas, lower bits of it will be filled with 0.

Example of AreaList

{
  province_list: {
    110000: 'Beijing',
    330000: 'Zhejiang Province'
  },
  city_list: {
    110100: 'Beijing City',
    330100: 'Hangzhou',
  },
  county_list: {
    110101: 'Dongcheng District',
    110102: 'Xicheng District',
    110105: 'Chaoyang District',
    110106: 'Fengtai District'
    330105: 'Gongshu District',
    330106: 'Xihu District',
    // ....
  }
}

All code of China: Area.json

argument of callback function confirm

An array contains selected area objects.

code - code of selected area, name - name of selected area

[{
  code: '330000',
  name: 'Zhejiang Province'
}, {
  code: '330100',
  name: 'Hangzhou'
},{
  code: '330105',
  name: 'Xihu District'
}]