react-markdown in react project - reactjs

I'm trying to make a markdown editor with React.
I am using react-markdown library.
I wrote the same as the document, but the conversion does not work.
When I check the element in devtools, the tag is changed normally.
What could be the problem?
// App.tsx
function App() {
const [inputText, setInputText] = useState<string>('');
const handleInputText = (e: ChangeEvent<HTMLTextAreaElement>) => {
const { value } = e.target;
setInputText(value);
};
return (
<Container>
<Header>
<p>Simple Markdown Editor</p>
</Header>
<Wrapper>
<Editor onTextChange={handleInputText} />
<Result text={inputText} />
</Wrapper>
</Container>
);
}
export default App;
// Editor.tsx
function Editor({ onTextChange }: { onTextChange: (e: ChangeEvent<HTMLTextAreaElement>) => void }) {
return (
<Wrapper>
<TextareaAutosize autoFocus placeholder="Write here.." onChange={(e) => onTextChange(e)} />
</Wrapper>
);
}
export default Editor;
// Result.tsx
function Result({ text }: { text: string }) {
return (
<Wrapper>
<ReactMarkdown remarkPlugins={[remarkGfm]}>{text}</ReactMarkdown> // this code
</Wrapper>
);
}
export default Result;
enter image description here

Related

Refactor React Components Code Using Context API

I am suppose to refactor this code. The task is to avoid passing username, updateUsername all the way down and without passing props directly. I am suppose to do this without using any third party library or framework.
This is the code
import { useState } from "react";
export default function App() {
const [username, setUsername] = useState("owais");
const [otherUsername, setOtherUsername] = useState("calvin");
return (
<>
<User username={username} updateUsername={setUsername} />
<User username={otherUsername} updateUsername={setOtherUsername} />
</>
);
}
function User({ username, updateUsername }) {
return (
<div>
Username: {username}
<UsernameEditor username={username} updateUsername={updateUsername} />
</div>
);
}
function UsernameEditor({ username, updateUsername }) {
return (
<div>
<input
type="text"
value={username}
onChange={(e) => updateUsername(e.target.value)}
/>
</div>
);
}
I decided to use ContextAPI but I cannot seem to find a way to achieve this without either duplicating the user component and userNameEditor component code or passing the props directly to the component. Any ways I can achieve this?
This is what I currently have
import { createContext, useContext, useState } from "react"
interface AppContextInterface {
username: string;
setUsername: Function;
otherUsername: string;
setOtherUsername: Function;
}
const AppCtx = createContext<AppContextInterface | null>(null);
export default function App() {
const [username, setUsername] = useState("owais");
const [otherUsername, setOtherUsername] = useState("calvin");
const value = { username, setUsername, otherUsername, setOtherUsername };
return (
<AppCtx.Provider value={value}>
<User />
<OtherUser />
</AppCtx.Provider>
);
}
function UsernameEditor() {
const appContext = useContext(AppCtx);
return (
<div>
<input
type="text"
value={appContext?.username}
onChange={(e) => appContext?.setUsername(e.target.value)}
/>
</div>
);
}
function User() {
const appContext = useContext(AppCtx);
return (
<div>
Username: {appContext?.username}
<UsernameEditor />
</div>
);
}
function OtherUserEditor() {
const appContext = useContext(AppCtx);
return (
<div>
<input
type="text"
value={appContext?.otherUsername}
onChange={(e) => appContext?.setOtherUsername(e.target.value)}
/>
</div>
);
}
function OtherUser() {
const appContext = useContext(AppCtx);
return (
<div>
Username: {appContext?.otherUsername}
<OtherUserEditor />
</div>
);
}

How to write a useComponent custom hook in React?

I want to create a custom hook useComponent which returns a JSX.Element that will be rendered elsewhere.
I have tried this:
import { useState} from 'react';
const useComponent = () => {
const [value, setValue] = useState('');
const c = () => {
return <>
<p>Component</p>
<input value={value} onChane={(e) => setValue(e.target.value)} />
</>
}
return {
c,
value,
}
}
export default function App() {
const {c: C} = useComponent();
return (
<div className="App">
<C />
</div>
);
}
but it does not work. Once I try typing on input, nothing happens.
How can I achieve this ?
I know it might be a bad practice to do such a thing, but the reason I want this is to be able to open a global dialog and pass the c component as children to the <Dialog /> component so I can both render c inside the dialog's body and also have access to the [value, setValue] state. So my use case would be something like:
[EDIT]
I also add the whole logic with dialog:
import { createContext, useContext, useState } from "react";
const Test = ({ value, setValue }) => {
return (
<>
<p>Component</p>
<input value={value} onChange={(e) => setValue(e.target.value)} />
</>
);
};
const useComponent = () => {
const [value, setValue] = useState("");
return {
element: <Test value={value} setValue={setValue} />,
value
};
};
const DialogCTX = createContext({});
export function DialogProvider(props) {
const [component, setComponent] = useState(null);
const ctx = {
component,
setComponent
};
return (
<DialogCTX.Provider value={ ctx }>
{props.children}
</DialogCTX.Provider>
);
}
export const useDialog = () => {
const {
component,
setComponent,
} = useContext(DialogCTX);
return {
component,
setComponent,
}
};
const Dialog = () => {
const { component } = useDialog();
return <div>
<p>Dialog</p>
{component}
</div>
}
const Setter = () => {
const {element, value} = useComponent();
const {setComponent} = useDialog();
return <div>
<p>Setter component</p>
<p>{value}</p>
<button onClick={() => setComponent(element)}>Set</button>
</div>
}
export default function App() {
return <div className="App">
<DialogProvider>
<Setter />
<Dialog />
</DialogProvider>
</div>;
}
As you said you want to return a JSX.Element but you actually returning a new component (a new function) every time your hook runs. So you could achieve your goal if you actually declare your component outside your hook and return the rendered one. Here is a working example:
import { useState } from "react";
const Test = ({ value, setValue }) => {
return (
<>
<p>Component</p>
<input value={value} onChange={(e) => setValue(e.target.value)} />
</>
);
};
const useComponent = () => {
const [value, setValue] = useState("");
return {
element: <Test value={value} setValue={setValue} />,
value
};
};
export default function App() {
const { element } = useComponent();
return <div className="App">{element}</div>;
}

Build search functionality in Next.js app

I want to integrate a search functionality in my Next.js app which should look like this:
User types a keyword in searchBar which is inside of Header
After clicking on the search button the keyword should be passed on the SearchResult page, in which I load it dynamically into the youtube-search-api link
The structure looks like this:
Header.js (contains SearchBar component)
_app.js (contains Header and components)
SearchResults.js (inside pages folder, should fetch typed keyword from Header)
I tried it with zustand and it looks like this currently:
Header.js:
import SearchBar from "./SearchBar";
const Header = () => {
return (
<div className={styles.header}>
...
<SearchBar />
...
</div>
);
};
export default Header;
SearchBar.js:
import create from 'zustand';
import { useRouter } from 'next/router';
import Image from 'next/image';
import styles from '../styles/Header.module.scss';
import loupe from '../public/images/loupe.png';
const useStore = create((set) => ({
keyword: '',
setKeyword: (keyword) =>
set((state) => ({
...state,
keyword,
})),
}));
const SearchBar = () => {
const router = useRouter();
const keyword = useStore((state) => state.keyword);
const setKeyword = useStore((state) => state.setKeyword);
const handleClick = (e) => {
e.preventDefault();
router.push('/searchResults');
};
return (
<div className={styles.searchBar}>
<input
type='text'
value={keyword}
placeholder='Suche...'
onChange={(e) => setKeyword(e.target.value)}
/>
<button className={styles.searchBtn} type='submit' onClick={handleClick}>
<Image src={loupe} alt='' />
</button>
</div>
);
};
export default SearchBar;
_app.js:
import Header from '../components/Header';
function MyApp({ Component, pageProps }) {
return (
<>
<Header />
<Component {...pageProps} />
</>
);
}
export default MyApp;
and SearchResults.js:
import { fetchData } from '../lib/utils';
import Moment from 'react-moment';
import { Modal } from 'react-responsive-modal';
import ReactPlayer from 'react-player/youtube';
export default function SearchResults({ videos }) {
console.log(videos);
const [modalIsOpen, setModalIsOpen] = useState(false);
const [modalData, setModalData] = useState(null);
const videoURL = 'https://www.youtube.com/watch?v=' + modalData;
const sortedVids = videos
.sort((a, b) =>
Number(
new Date(b.snippet.videoPublishedAt) -
Number(new Date(a.snippet.videoPublishedAt))
)
)
.filter((vid) => vid.snippet.title.toLowerCase());
return (
<>
<div className={`${styles.playlist_container} ${styles.search}`}>
<div className={styles.main_container}>
<h1>Search results</h1>
{sortedVids
.filter((v) => v.snippet.title !== 'Private video')
.map((vid, id) => {
return (
<div className={styles.item_container}
key={id}>
<div className={styles.clip_container}>
<Image
className={styles.thumbnails}
src={vid.snippet.thumbnails.medium.url}
layout='fill'
objectFit='cover'
alt={vid.snippet.title}
/>
<button
className={styles.playBtn}
onClick={() => {
setModalData(vid.snippet.resourceId.videoId);
console.log(modalData);
setModalIsOpen(true);
}}
>
<Image src='/images/play.svg' width='60' height='60' />
</button>
</div>
<div className={styles.details_container}>
<h3>{vid.snippet.title}</h3>
</div>
</div>
);
})}
</div>
</div>
<div>
<Modal
open={modalIsOpen}
onClose={() => setModalIsOpen(false)}
center
classNames={{
overlay: 'customOverlay',
modal: 'customModal',
overlayAnimationIn: 'customEnterOverlayAnimation',
overlayAnimationOut: 'customLeaveOverlayAnimation',
modalAnimationIn: 'customEnterModalAnimation',
modalAnimationOut: 'customLeaveModalAnimation',
}}
animationDuration={800}
>
<ReactPlayer
playing={true}
url={videoURL}
width='100%'
height='calc(100vh - 100px)'
config={{
youtube: {
playerVars: {
autoplay: 1,
controls: 1,
},
},
}}
/>
</Modal>
</div>
<Footer />
</>
);
}
export async function getStaticProps() {
const keyword = useStore((state) => state.keyword);
const { YOUTUBE_KEY } = process.env;
const uploadsURL = `https://youtube.googleapis.com/youtube/v3/search?part=snippet&channelId=UCbqKKcML7P4b4BDhaqdh_DA&maxResults=50&key=${YOUTUBE_KEY}&q=${keyword}`;
async function getData() {
const uploadsData = fetchData(uploadsURL);
return {
videos: await uploadsData,
};
}
const { videos } = await getData();
return {
revalidate: 86400,
props: {
videos: videos.items,
},
};
}
Would someone please help me out by telling me what I did wrong and how it works in the right way? Thank you guys!!

How to call child submit method from another child component

Im trying to solve this for 2 days but cant.
How to call onSubmit method in CreateProject component when onApply function called in ModalContent component with Typescript and react-hook-form.
The idea: when I clicked button in ModalContent it should call react-hook-form onSumbit method in CreateProject. Then CreateProject calls onSubmit in parent component of these two childs.
Or maybe the idea of such component structure is wrong?
Thanks everyone for any answers.
Parent component:
import { ModalBody } from '../../components/modals'
import useCreateProject from '../../api/hooks/createProject'
export default function New(): JSX.Element {
const [modalVisible, setModalVisible] = React.useState(true)
const onSubmit = useCreateProject((data) => {
const { createProject } = data.data.data
console.log(data)
})
const onApply = () => {
console.log(123)
}
return (
<ModalContent
name={'Create project'}
visible={modalVisible}
onApply={onApply}
onCancel={() => setModalVisible(false)}
>
<ModalBody>
<CreateProject onSubmit={onSubmit.mutate} />
</ModalBody>
</ModalContent>
)
}
Child component
import React from 'react'
import Input from '../Inputs/Input'
import Textarea from '../Inputs/Textarea'
import FileUploader from '../uploader/FileUploader'
import Tasks from '../forms/Tasks'
import { useForm } from 'react-hook-form'
import {
draftBudgetMaxLength,
projectNameMaxLength,
descriptionMaxLength,
} from '../../constants/createProjectModal'
import ButtonSecondary from '../buttons/ButtonSecondary'
export interface IModalInputs {
create_project_name: string
}
export interface ICreateProjectProps {
onSubmit: (values: IModalInputs) => void
}
const –°reateProject: React.FC<ICreateProjectProps> = ({
onSubmit,
}): React.ReactElement => {
const {
register,
getValues,
control,
handleSubmit,
formState: { errors },
} = useForm<IModalInputs>()
return (
<>
<form onSubmit={handleSubmit(() => onSubmit(getValues()))}>
<div className="p-4">
<div className="flex flex-col -m-1.5">
<div className="m-1.5">
<Input
type="text"
label="Project name"
name="create_project_name"
register={register}
error={errors.create_project_name}
options={{
required: true,
maxLength: projectNameMaxLength,
}}
/>
</div>
</div>
</div>
</form>
</>
)
}
export default –°reateProject
Child component with click event
import React from 'react'
import Image from 'next/image'
import close from '../../assets/close.svg'
import ButtonSecondary from '../buttons/ButtonSecondary'
interface IModalContentProps {
children: React.ReactElement
onApply?: () => void
visible: boolean
buttonName?: string
}
const ModalContent: React.FC<IModalContentProps> = ({
name,
children,
visible,
onCancel,
onApply,
buttonName,
}) => {
return (
<>
{visible && (
<div className="flex p-4 space-x-2 justify-end">
{children}
<ButtonSecondary
click={onApply}
type={'submit'}
label={buttonName || 'Ok'}
id={buttonName}
shown={true}
styleClass="styleClass"
paddingClass="py-2 py-2 pr-4 pl-2"
/>
</div>
)}
</>
)
}
export default ModalContent
The problem was resolved with useRef and useImperativeHandle hooks.
Parent:
export default function New(): JSX.Element {
const [modalVisible, setModalVisible] = React.useState(true)
const childRef = React.useRef<any>()
const onSubmit = useCreateProject((data) => {
const { createProject } = data.data.data
console.log(data)
})
return (
<ModalContent
name={'Create project'}
visible={modalVisible}
onApply={() => childRef.current.SubmitForm()}
onCancel={() => setModalVisible(false)}
>
<ModalBody>
<CreateProject onSubmit={onSubmit.mutate} ref={childRef} />
</ModalBody>
</ModalContent>
)
}
Child:
export interface IModalInputs {
create_project_name: string
}
export interface ICreateProjectProps {
onSubmit: (values: IModalInputs) => void
}
function CreateProject(props: ICreateProjectProps, ref) {
const {
register,
getValues,
control,
handleSubmit,
formState: { errors },
} = useForm<IModalInputs>()
useImperativeHandle(ref, () => ({
SubmitForm() {
handleSubmit(() => props.onSubmit(getValues()))()
},
}))
return (
<>
<form ref={ref}>
<div className="p-4">
<div className="flex flex-col -m-1.5">
<div className="m-1.5">
<Input
type="text"
label="Project name"
name="create_project_name"
register={register}
error={errors.create_project_name}
options={{
required: true,
maxLength: projectNameMaxLength,
}}
/>
</div>
</div>
</div>
</form>
</>
)
}
export default React.forwardRef(CreateProject)

wrap component with span or div tag based on logic in react

what is the best way for me to use logic to wrap the component? I would like to have another span to wrap Child component if showSpan is true, maybe something like following, but it does not work
const Child = () => {
return <button>click me</button>;
};
const Home = (props: { showSpan: boolean }) => {
const { showSpan } = props;
return (
<div>
{showSpan && (<span> ssss)}
<Child />
{showSpan && (</span>)}
</div>
);
};
export default function App() {
return (
<div className="App">
<h1>
<Home showSpan={false} />
</h1>
</div>
);
}
You could use Fragment (empty tag) to be the alternative to span and use them as wrapper. Should work like this:
const Child = () => {
return <button>click me</button>;
};
const Home = (props: { showSpan: boolean }) => {
const { showSpan } = props;
const Wrapper = showSpan ?
({children}) => <span>ssss {children}</span> :
({children}) => <>{children}</>;
return (
<div>
<Wrapper>
<Child />
</Wrapper>
</div>
);
};
export default function App() {
return (
<div className="App">
<h1>
<Home showSpan={false} />
</h1>
</div>
);
}

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