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이상혁·2021년 8월 31일
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👍 오늘 수업 내용

React를 배워야하는 이유, React 컴포넌트(state)

👍 React 를배워야하는 이유

  1. 가장 많은 사용자 수
  2. 하나를 배우면 웹, 안드로이드, IOS, 데스크톱을 동시에 할 수 있다는 장점

👍 React 컴포넌트

컴포넌트란 UI 또는 기능을 재사용 쉽게 할 수 있게 해준다.

👍 React state

state: 컴포넌트에서 사용하는 변수
setState: 컴포넌트에서 사용하는 변수를 바꿔주는 기능
useState: 컴포넌트에서 사용하는 변수를 만들어주는 기능
useState는 react로부터 import 해줘야 합니다.

2일차 quiz (state연습)

index.js

import {Wrapper1,Wrapper2,Wrapper3,HeaderHeader,Header,Main,MainId,Id,IdInput,Footer
,MainPw,HeaderTitle, Pw, PwInput, LoginButton,TalkButton
,FooterMain,FooterFont,TalkLogin,Error} from '../../../styles/02-login'

import {useState} from 'react'

export default function BoardsNewPage(){

    const [ email, setEmail ] = useState()
    const [ pass, setPass ] = useState()

    const [ emailError, setEmailError ] = useState()
    const [ passError, setPassError ] = useState()


    function onChangeEmail(event) {
        setEmail(event.target.value)
    }

    function onChangePass(event) {
        setPass(event.target.value)
    }

    function onClickSignup() {
        if(email === "" || !email.includes("@")) {
            setEmailError("이메일을 확인해 주세요")
        }

        if(pass === "" || pass.length < 8) {
            setPassError("8~16자의 영문,숫자,특수문자만 사용가능합니다.")
        }
    }

    


    return (
        <Wrapper1>
            <Wrapper2 >
            <HeaderHeader></HeaderHeader>
                <Wrapper3>                  
                    <Header>
                        <img src="/images/photo10.png"/>
                        <HeaderTitle>잇츠로드</HeaderTitle>
                    </Header>
                    <Main>
                        <MainId>
                            <Id>
                                <IdInput type = "text" placeholder="이메일을 입력해 주세요" onChange={onChangeEmail}/>
                                <img src="/images/photo11.png"/>
                            </Id>
                            <hr />
                            <div>
                                <Error>{emailError}</Error>
                            </div>
                        </MainId>
                        <MainPw>
                            <Pw>
                                <PwInput type = "password" placeholder="비밀번호를 입력해 주세요" onChange={onChangePass}/>
                                <img src="/images/photo11.png"/>
                            </Pw>
                            <hr/>
                            <div>
                                <Error>{passError}</Error>
                            </div>
                        </MainPw>
                    </Main>
                    <Footer>
                        <LoginButton onClick={onClickSignup}>로그인</LoginButton>
                        <FooterMain>
                            <FooterFont>이메일 찾기</FooterFont>
                            <FooterFont>|</FooterFont>
                            <FooterFont>비밀번호 찾기</FooterFont>
                            <FooterFont>|</FooterFont>
                            <FooterFont>회원가입</FooterFont>
                        </FooterMain>
                        <TalkButton> 
                        <img src="/images/photo12.png"/>                       
                          <TalkLogin>카카오톡으로 로그인</TalkLogin>
                        </TalkButton>
                            
                        
                    </Footer>
                </Wrapper3>
            </Wrapper2>
        </Wrapper1>

    )

}

02-login.js

import styled from '@emotion/styled'

export const Wrapper1 = styled.div`
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    
`

export const Wrapper2 = styled.div`
    width: 640px;
    height: 1138px;
    background-color: skyblue;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    border: solid 1px black;
    background-image: url("/images/photo13.png");
    
`
export const HeaderHeader = styled.div`
    width: 640px;
    height: 43px;
    border : solid 1px black;
`

export const Wrapper3 = styled.div`
    width: 540px;
    height: 1095px;
    
`

export const Header = styled.div`
    width: 540px;
    height: 400px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    
`
export const HeaderTitle = styled.span`
    font-size: 60px;
    color: white;
` 

export const Main = styled.div`
    width: 540px;
    height: 300px;
    /* background-color: blue; */
`

export const MainId = styled.div`
    width: 540px;
    height: 90px;
    
`

export const Id = styled.div`
    display: flex;
    flex-direction: row;
    justify-content: space-between;
`

export const IdInput = styled.input`
    width:400px;
    height: 30px;
    border: none;
    background-color:transparent;
    color: white;
`

export const MainPw = styled.div`
    width: 540px;
    height: 90px;
    
`

export const Pw = styled.div`
    display: flex;
    flex-direction: row;
    justify-content: space-between;
`

export const PwInput = styled.input`
    width:400px;
    height: 30px;
    border: none;
    background-color:transparent;
    color: white;
`


export const Footer = styled.div`
    width: 540px;
    height: 350px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    
`

export const LoginButton = styled.button`
    width: 540px;
    height: 76px;
    border-radius: 38px;
    opacity: 0.6;
    background-color: #ff1b6d;
    font-size: 26px;
    color: white;
`

export const TalkButton = styled.button`
    width: 540px;
    height: 76px;
    border: 1px solid yellow;
    border-radius: 38px;
    background-color:transparent;
    font-size: 26px;
    color: yellow;
`

export const FooterMain = styled.div`
    width: 400px;
    height: 30px;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
`

export const FooterFont = styled.span`
    size: 20px;
    color: white;
`

export const TalkLogin = styled.span`
    margin-left: 10px;

`

export const Error = styled.div`
    color: red;
`

2일차 board

index.js

import{ Wrapper1, Wrapper,Title, IdInput,TextInput,Header, InputText, Main, MainInput, Address,
    AddressInput, AddressButton, YouTube, Picture,
     PictuerButton, PictureDiv,MainSettings, FooterButton,
   AddressBox,MiniTitle,ErrorMessage} from '../../../styles/BoardsNew.styles'

import {useState} from 'react'

export default function BoardsNewPage(){

    const [ name, setName ] = useState()
    const [ pass, setPass ] = useState()
    const [ title, setTitle ] = useState()
    const [ contents, setContents ] = useState()
    

    const [ nameError, setNameError ] = useState()
    const [ passError, setPassError ] = useState()
    const [ titleError, setTitleError ] = useState()
    const [ contentsError, setContentsError ] = useState()
    

    function onChangeName(event) {
        setName(event.target.value)
    }

    function onChangePass(event) {
        setPass(event.target.value)
    }

    function onChangeTitle(event) {
        setTitle(event.target.value)
    }

    function onChangeContents(event) {
        setContents(event.target.value)
    }

    function onClickSignup() {
        if(name === ("")) {
            setNameError("이름을 작성해주세요.")
        }

        if(pass === ("")) {
            setPassError("비밀번호를 작성해주세요.")
        }

        if(title === ("")) {
            setTitleError("제목을 작성해주세요.")
        }

        if(contents === ("")) {
            setContentsError("내용을 작성해주세요.")
        }
    }

    


   return (
       <Wrapper1>
           <Wrapper>
               <Title>게시물 등록</Title>
               <IdInput>
                   <div>
                        <div>
                            <MiniTitle>작성자</MiniTitle>
                        </div>
                        <TextInput type="text" placeholder="이름을 적어주세요" onChange={onChangeName}/>   
                        <ErrorMessage>{nameError}</ErrorMessage>
                   </div>
                   <div>
                   <div>
                            <MiniTitle>비밀번호</MiniTitle>
                        </div>
                        <TextInput type="password" placeholder="비밀번호를 입력해주세요" onChange={onChangePass} />
                        <ErrorMessage>{passError}</ErrorMessage>
                   </div>
               </IdInput>
               <Header>    
                   <MiniTitle>제목</MiniTitle>      
                   <InputText type="text" placeholder="제목을 입력하세요" onChange={onChangeTitle}/>  
                    <ErrorMessage>{titleError}</ErrorMessage>
               </Header>
               <Main>          
                       <MiniTitle>내용</MiniTitle>               
                       <MainInput type="text" placeholder="내용을 작성해주세요" onChange={onChangeContents}/>   
                       <ErrorMessage>{contentsError}</ErrorMessage>  
               </Main>
               <Address>              
                   <MiniTitle>주소</MiniTitle>    
                   <AddressBox>
                       <AddressInput type="text"/>
                       <AddressButton>우편번호 검색</AddressButton>
                   </AddressBox>
                   <div>
                       <InputText type="text"/>
                   </div>
                   <div>
                       <InputText type="text"/>
                   </div>
               </Address>
               <YouTube>
                   <div>
                       <MiniTitle>유튜브</MiniTitle>
                   </div>
                   <div>
                       <InputText type="text" placeholder="링크를 복사해주세요"/>
                   </div>
               </YouTube>
               <Picture>     
                   <div>  
                   사진첨부
                   </div>       
                   <PictureDiv>
                       <PictuerButton>
                           <span>+</span>
                           <span>Upload</span>
                       </PictuerButton>
                       <PictuerButton>
                       <span>+</span>
                           <span>Upload</span>
                       </PictuerButton>
                       <PictuerButton>
                           <span>+</span>
                           <span>Upload</span>
                       </PictuerButton>
                   </PictureDiv>
               </Picture>
               <MainSettings>       
                   메인설정     
                   <div>
                       <input type="radio" name="settings"/>유튜브
                       <input type="radio" name="settings"/>사진
                   </div>
               </MainSettings>     
                   <FooterButton onClick={onClickSignup}>등록하기</FooterButton>
           </Wrapper>
       </Wrapper1>
   )

}

BoardsNew.styles.js

import styled from '@emotion/styled'

export const Wrapper1 = styled.div`
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
`

 export const Wrapper = styled.div`
    border: solid 1px black;
    width: 1200px;
    height: 1715px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
`
export const Title = styled.h1`
    margin-top: 50px;
`

export const IdInput = styled.div`
    width: 996px;
    height: 130px;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    /* align-items: center; */
`

export const TextInput = styled.input`
    width: 486px;
    height: 52px;
    margin-top: 10px;
`

export const Header = styled.div`
    width: 996px;
    height: 120px;
    display: flex;
    flex-direction: column;
    
`
export const InputText = styled.input`
    width: 996px;
    height: 52px;
    border: solid 1px black;
    margin-top: 10px;
`

export const Main = styled.div`
    width: 996px;
    height: 530px;
    display: flex;
    flex-direction: column;
    
`

export const MainInput = styled.input`
    width: 996px;
    height: 480px;
    border: solid 1px black;
`

export const Address = styled.div`
    width: 996px;
    height: 200px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
`

export const AddressBox = styled.div`
    width: 210px;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
`

export const AddressInput = styled.input`
    width: 77px;
    height: 52px;
`

export const AddressButton = styled.button`
    width: 124px;
    height: 52px;
    background-color: black;
    color: white;
`

export const YouTube = styled.div`
    width: 996px;
    height: 80px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
`

export const Picture = styled.div`
    width: 996px;
    height: 120px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    
`

export const PictureDiv = styled.div`
    width: 270px;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
`

export const PictuerButton = styled.div`
    width: 78px;
    height: 78px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background-color: #BDBDBD;

`

export const MainSettings = styled.div`
    width: 996px;
    height: 50px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    
`

export const FooterButton = styled.button`
    width: 179px;
    height: 52px;
    background-color: #FFD600;
    margin-bottom: 50px;
    border: none;
`

export const MiniTitle = styled.span`
    margin-bottom: 10px;
`

export const ErrorMessage = styled.div`
    color:red;
`

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