在下面的下拉列表中,为什么Select City
没有出现在页面加载的默认选择中?相反,City1
会显示为默认选择的选项。
我的默认选项编码为:
<option value="" disabled selected>
Select City
</option>
选项编码在另一个js文件中,如下所示:
import React from 'react'
const cityoptions = [
{ value: '1', name: 'City1' },
{ value: '2', name: 'City2' },
{ value: '3', name: 'City3' },
....
以下是下拉菜单的组成部分。
import React from 'react'
import PropTypes from 'prop-types'
import Select from '../others/input/select'
import cityOptions from './city-options'
const InputCities = ({ value, change }) => (
<div className="edit_caste_div">
<Select
placeholder="Select option"
value={value}
valueChange={e => change('city', e)}
className="edit_city my2"
>
<option value="" disabled selected>
Select City
</option>
{cityOptions.map((e, key) => {
return <option key={key} value={e.value}>{e.name}</option>
})}
</Select>
</div>
)
InputCities.propTypes = {
value: PropTypes.string.isRequired,
change: PropTypes.func.isRequired,
}
答案 0 :(得分:0)
您应该添加defaultValue属性以选择并将其设置为禁用值
<Select
defaultValue="Select City"
valueChange={e => change('city', e)}
className="edit_city my2"
>
<option value="Select City" disabled>
Select City
</option>
{cityOptions.map((e, key) => {
return <option key={key} value={e.value}>{e.name}</option>
})}
</Select>