ensure-get-list-val

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Make sure you can get an available value from the list

Installation

npm install ensure-get-list-val

或者

yarn add ensure-get-list-val

API

| 参数 | 说明 | 类型 | 默认值 | | :----| :---- | :---- | :---- | | items | list data | ItemType[] | undefined | | value | val | ValueType | undefined | | getVal | Function to get value | (item: ItemType) => ValueType | item => item | | pos | The position of the returned value when no data is queried | 'first','last' | 'frist' |

Usage

import ensureGetValFromList from 'ensure-get-list-val'

const currentVal = ensureGetValFromList<number>({
    items: [1, 2, 3]
})

currentVal // 1

import ensureGetValFromList from 'ensure-get-list-val'

interface stringSelectOptinos {
  label: string;
  value: string;
}

const currentVal = ensureGetValFromList<stringSelectOptinos, string>({
    items: ['1', '2', '3'].map(item => ({label: item, value: item})),
    value: '4',
    getVal: (item) => item.value,
  })

currentVal // 1