質問編集履歴
3
コードの追加
test
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test
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@@ -25,127 +25,3 @@
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44 | // setPublishDate({ ...publishDate, [name]: value })
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```
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```react
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import React, { useState, useEffect } from 'react'
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import moment from 'moment'
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import { Select } from 'antd'
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const { Option } = Select
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const aaa = (props) => {
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const { state, setState } = props
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const [publishDate, setPublishDate] = useState({
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dateMonth: '',
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})
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const monthNumbers = [...Array(12).keys()].map((i) => ++i)
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const monthItems = monthNumbers.map((monthNumber) => (
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<Option value={('0' + monthNumber).slice(-2)}>
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{('0' + monthNumber).slice(-2)}
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</Option>
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))
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useEffect(() => {
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const formated = moment(Number(state.publishedAt))
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.format('YYYY/MM/DD/HH/mm')
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.split('/')
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setPublishDate({
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dateMonth: formated[1],
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})
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// eslint-disable-next-line react-hooks/exhaustive-deps
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}, [])
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const onChange = (e) => {
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console.log(e)
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const { name, value } = e.target
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const tempDate = { ...publishDate, [name]: value }
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const formated = `${tempDate.dateMonth}`
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setPublishDate({ ...publishDate, [name]: value })
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setState({
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...state,
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publishedAt: String(new Date(formated).getTime()),
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})
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}
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return (
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<>
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<label>
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<Select
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// name="dateMonth"
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value={publishDate.dateMonth}
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onChange={onChange}
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>
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{monthItems}
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</Select>
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</label>
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月
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</>
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)
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}
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export default aaa
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```
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2
文字修正
test
CHANGED
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@@ -1 +1 @@
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1
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React
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1
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+
Reactでセレクトボックス項目の切換の方法
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test
CHANGED
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File without changes
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1
追加
test
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@@ -1 +1 @@
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1
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React hookで
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1
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+
React hookでセレクトボックス項目の切換の方法
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test
CHANGED
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File without changes
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