vant/docs/markdown/en-US/picker.md

Picker

Install

import { Picker } from 'vant';

Vue.component(Picker.name, Picker);

Usage

Basic Usage

<van-picker :columns="pickerColumns" @change="onChange" />

const states = {
  'Group1': ['Delaware', 'Florida', 'Georqia', 'Indiana', 'Maine'],
  'Group2': ['Alabama', 'Kansas', 'Louisiana', 'Texas']
};

export default {
  data() {
    return {
      pickerColumns: [
        {
          values: Object.keys(states),
          className: 'column1'
        },
        {
          values: states.Group1,
          className: 'column2'
        }
      ]
    };
  },

  methods: {
    onChange(picker, values) {
      picker.setColumnValues(1, citys[values[0]]);
    }
  }
};

Picker with toolbar

<van-picker
  showToolbar
  :title="title"
  :columns="pickerColumns"
  @change="onChange"
  @cancel="onCancel"
  @confirm="onConfirm"
/>

const states = {
  'Group1': ['Delaware', 'Florida', 'Georqia', 'Indiana', 'Maine'],
  'Group2': ['Alabama', 'Kansas', 'Louisiana', 'Texas']
};

export default {
  data() {
    return {
      title: 'Title',
      pickerColumns: [
        {
          values: Object.keys(states),
          className: 'column1'
        },
        {
          values: states.Group1,
          className: 'column2'
        }
      ]
    };
  },

  methods: {
    onChange(picker, values) {
      picker.setColumnValues(1, citys[values[0]]);
    },
    onCancel() {
      Toast('Cancel');
    },
    onConfirm() {
      Toast('Confirm');
    }
  }
};

API

Attribute	Description	Type	Default	Accepted Values
visibileColumnCount	Count of columns to show	Number	5	-
itemHeight	Item height	Number	44	-
columns	Columns data	Array	-	-
showToolbar	Whether to show toolbar	Boolean	true	-
title	Toolbar title	String	-	-

Data struct of columns

key	Description
values	Value of column
defaultIndex	Default value index
className	ClassName for this column

Picker instance

The first argument of change event's callback function is a picker instance with some methods

Method	Description
getColumnValue(index)	get current value of the column
setColumnValue(index, value)	set current value of the column
getColumnValues(index)	get all values of the column
setColumnValues(index, values)	set all values of the column
getValues()	get current values of all columns
setValues(values)	set current values of all columns