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Underline <a> tag with React

I was Wondering how to give style to two tags in react without using the className(as not using className is the main challenge).
Menu Here
Click Me
So for the "curry dish," it should only underline when hovering.
And for the click me it should be underlined first and disappear while hovering on it.
I got both underlines removed using the code below. But still can't figure out how to apply separate styling please help.
a: hover {
text-decoration: underline;
}

**Tags in react without using the className:**
<span style={{color: "red",cursor: "pointer",
text-decoration: underline !important }}>
Menu Here
</span>

If you're not using CSS you can do this with a simple stateful react component.
const UnderlineHover = ({children, ...rest}) => {
const [isHover, setIsHover] = useState(false);
const style = isHover ? {textDecoration: "underline"} : {};
return <a onMouseEnter={() => setIsHover(true)}
onMouseLeave={() => setIsHover(false)}
style={...style}
{...rest}
>{children}</a>;
};

you can try with state and style like=>
const [hover,setHover] = useState("")
const handleMouseEnter =()=>{
setHover(true)
}
const handleMouseExit =()=>{
setHover(false)
}
const linkStyle = {
text-decoration: hover? underline:none;
}
return(
<a href="" style={linkStyle} onMouseEnter={handleMouseEnter} onMouseLeave={handleMouseExit}>Menu Here</a>
<a href="" style={linkStyle} onMouseEnter={handleMouseEnter} onMouseLeave={handleMouseExit}>Click Me </a>
)
Hope this will help to solve out your problem. If you still facing issue just lemme know, i will help you more.
Thanks

React Accordion Update height when child DOM has new Table to render

In the image as you can see, I have a Foo page, where I have 10 Accordions, In one of the Accordions there is a Form component, When I submit the Form it calls a remote API and returns some JSON data, I convert it to a Table of content and want to show it under the Form.
The problem is I can show the Table after toggling the Accordion again after the submit button clicked, as I have set the maxheight in the onClick.
const [activeState, setActiveState] = useState("");
const [activeHeight, setActiveHeight] = useState("0px");
const toogleActive = () => {
setActiveState(activeState === "" ? "active" : "");
setActiveHeight(activeState === "active" ? "0px" :`${contentRef.current.scrollHeight}px`)
}
return (
<div className={styles.accordion_section}>
<button className={styles.accordion} onClick={toogleActive}>
<p className={styles.accordion_title}>{title}</p>
</button>
<div ref={contentRef}
style={{ maxHeight: `${activeHeight}` }}
className={styles.accordion_content}>
<div>
{content}
</div>
</div>
</div>
)
I have used context also to share the useState hook between Accordion and Form components to update the height.
<UpdateHeightContext.Provider value={{updateHeight, setUpdateHeight}}>
<Accordion title="Find your Data" content={< FormWithTwoInput firstLabel="FirstName" secondLabel="LastName" buttonColor="blue" buttonText="Check Deatils"/>} />
</UpdateHeightContext.Provider>
Is there any way to update the Accordions height dynamically when I receive the response from the API? Other than toggling it again. A similar question was asked here React accordion, set dynamic height when DOM's children change unfortunately no one replied.

Even though the working around what I have found is not a robust one, but it is working completely fine for me. If someone stumbles upon this same issue might find this useful.
import React, { useState, useRef } from 'react'
const Accordion = ({ title, content }) => {
const [activeState, setActiveState] = useState("");
const [activeHeight, setActiveHeight] = useState("0px");
const contentRef = useRef("form")
const toogleActive = () => {
setActiveState(activeState === "" ? "active" : "");
setActiveHeight(activeState === "active" ? "0px" :`${contentRef.current.scrollHeight + 100}px`)
}
return (
<div className={styles.accordion_section}>
<button className={styles.accordion} onClick={toogleActive}>
<p className={styles.accordion_title}>{title}</p>
</button>
<div ref={contentRef}
style={{ maxHeight: `${activeHeight}` }}
className={styles.accordion_content}>
<div>
{content}
</div>
</div>
</div>
)
}
Accordion.propTypes = {
title: PropTypes.string,
content: PropTypes.object,
}
export default Accordion
I have hardcoded some extra space so that while the dynamic response is accepted the Table content is shown. In the CSS module file, I have kept the overflow as auto, earlier it was hidden.
.accordion_content {
background-color: white;
overflow: auto;
max-height: max-content;
}
As a result, the Table is appearing dynamically and the user can scroll inside the Accordion if my Table needs larger space.

css different style to specific div created by map

I am creating a list of divs, which was created with map.
function renderButtons(){
const options = [...Array(10).keys()] // returns [0,1,2...9]
return _.map(options, (option)=> renderOption(option))
}
function renderOption(option:number){
return (
<div className="option-container" onClick={() => setLowerContainerVisible(true)}>
<img alt="" src={"./images/feedback-icons/icon-"+option.toString()+".svg"}/>
{option+1}
</div>
)
}
this renders a list of divs, and I was able to change each div background, when hover, like this:
.option-container{
width: 76px;
height: 100px;
background-color: #7777ff;
display: flex;
}
.option-container:hover{
background-color: #adadf3;
}
I wish to be able to click on a div, and change its background color to white. everything I try will change the background of all the 10 divs to white. How can I make it so only the clicked one is changed?

I suggest that you use renderOption and renderButtons as two components rather than plain functions. In the RenderButtons component, you can use some state to maintain which item is clicked, and within RenderOption you can control whether the background color is white or not based on wehther or not the current rendered button is the clicked option. In your .map() method, you can use component rather than a function call <RenderOption option={option} ... />.
See example below:
const {useState} = React;
function RenderButtons() {
const [clickedItem, setClickedItem] = useState(-1);
return Array.from(
Array(10).keys(),
option => <RenderOption isClicked={clickedItem === option} option={option} setClicked={setClickedItem}/>
);
}
function RenderOption({isClicked, option, setClicked}) {
const handleClick = () => {
// setLowerContainerVisible(true) / other code to run when you click
setClicked(option); // set to current option
}
return (
<div className={"option-container " + (isClicked ? "clicked" : "")} onClick={handleClick}>
{option+1}
</div>
)
}
ReactDOM.render(<RenderButtons />, document.body);
.option-container {
width: 76px;
height: 100px;
background-color: #7777ff;
display: flex;
}
.option-container.clicked, .option-container:hover {
background-color: #adadf3;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/17.0.0/umd/react.production.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/17.0.0/umd/react-dom.production.min.js"></script>
The className is a little messy as it involves a ternary, to clean this up it might be worth looking into using a node package such as classnames which allows you to easily build a list of classes based on conditions.

Do it in the event listener function:
<div className="option-container" onClick={highlightAndsetLowerContainerVisible}>
function highlightAndsetLowerContainerVisible(event){
event.preventDefault();
setLowerContainerVisible(true)
event.currentTarget.style.backgroundColor = "red";
}
You then might also want to reset the background color of the other divs

How to access the div element with class and attach the popup to it using react?

i am trying to create a popupdialog to be shown when user clicks on a button. for that i am using portal.
i want it to look like in the picture below,
So basically, when user clicks on the add button i want the popup dialog to display like in the picture above.
in the popup component i want to render overlay with children. and when user clicks on overlay div the popup should close.
I have something that kind of works without using Portal and is like below,
below is my code that is without using Portal,
function Parent({isDialogOpen, setDialogOpen, setSomething}: Props) {
const [isClicked, setIsClicked] = React.useState(false);
const handleButtonClick = () => {
if (setIsDialogOpen) setIsDialogOpen(!isDialogOpen);
if (setSomething) setSomething(isDialogOpen);
setIsClicked(!isClicked);
};
return (
<button onClick={handleButtonClick}>click</button>
{isDialogOpen && isClicked &&
<Overlay>
<Dialog>
//some divs
</Dialog>
</Overlay>
}
);
}
const Overlay = styled.div`
position: fixed;
padding-top:60px;
bottom: 40px;
top: 0;
left: 0;
right: 0;
backdrop-filter: blur(8px);
z-index: 100;
display: flex;
justify-content: center;
align-items: center;
`;
const Dialog = styled.div`
padding: 16px;
width: 384px;
max-height: calc(100% - 200px);
display: flex;
flex-direction: column;
`;
Now i am rewriting above using portal like below,
function Parent({isDialogOpen, setDialogOpen, setSomething}: Props) {
const [isClicked, setIsClicked] = React.useState(false);
const handleButtonClick = () => {
if (setIsDialogOpen) setIsDialogOpen(!isDialogOpen);
if (setSomething) setSomething(isDialogOpen);
setIsClicked(!isClicked);
};
return (
<button onClick={handleButtonClick}>click</button>
{isDialogOpen && isClicked &&
<Popup setSomething={setSomething} setIsDialogOpen={setIsDialogOpen} setIsClicked=
{setIsClicked}>
<Dialog>
//some divs
</Dialog>
</Overlay>
}
);
}
function Popup({setIsClicked, setSomething, setIsDialogOpen, children}: Props) {
return ReactDom.createPortal(
<>
<Overlay
onClick={() => {
if (setIsDialogOpen) setIsDialogOpen(false);
if (setSomething) setSomething(true);
setIsClicked(false);
}}
>
{children}
</Overlay>
</>,
//dont know what to pass here
);
}
Basically as seen in picture above, i want to render the overlay with dialog.
now in popup component i want to create div with classname 'popup' and find the div element with class navbar and attach this div popup to the navbar div
and pass this div element with class popup in the reactDOM.createPortal.
i am new to react and not sure how to do this. could someone help me with this.
thanks.

As I mentioned to you in the comment, react doesn't create the dom node for you. You must do it yourself. How you do it depends on your needs. the most basic example i can think of is below:
When component mounts first time, we need to create the portal and insert it into document.body
once we are sure portal exists, we can render into the portal using our dom ref.
function Popup({setIsClicked, setSomething, setIsDialogOpen, children}: Props) {
const [portal,setPortal] = React.useState<HTMLDivElement|null>( (document.getElementById('my-portal') as HTMLDivElement)||null);
const createPortalIfNotExists = React.useCallback(()=>{
if(portal===null){
const el = document.createElement('div');
el.id='my-portal';
document.body.appendChild(el);
// switch this line for the one above if you want it to be first in tree
// document.body.insertBefore(el, document.body.firstChild);
setPortal(document.getElementById('my-portal') as HTMLDivElement);
}
},[portal]);
createPortalIfNotExists();
if(portal===null){
return null;
}
return ReactDom.createPortal(
<>
<Overlay
onClick={() => {
if (setIsDialogOpen) setIsDialogOpen(false);
if (setSomething) setSomething(true);
setIsClicked(false);
}}
>
{children}
</Overlay>
</>,
portal
);
}
This is just one possible way of doing it. There are other more advanced use cases where you would have the portal be rendered by some other element in your component tree. But this should be enough to get you started. Also, i haven't tested this as i don't have tsc/tslint on this machine so YMMV

React can't figure out how to change a text through buttons onClick events

I'm new to React, Nodejs and JavaScript so bear with me.
I'm doing some practice with onClick events to change text by clicking some buttons, I have an input type="checkbox" to make the text bold when checked and vise versa, 2 buttons to increase and decrease the text size by 1+ or 1- and a span that shows the current text size (16 is my default), and finally a span with the id="textSpan" that have the text meant to be modified. I also want this buttons, the checkbox and the span with the id="fontSizeSpan" that shows the current font size to be hidden by default and when you click the text it appears on its left.
This is the code so far:
class FontChooser extends React.Component {
constructor(props) {
super(props);
this.state = {hidden: true};
this.checkInput = React.createRef();
this.hide = React.createRef();
}
toggle(){
this.setState({hidden: !this.state.hidden});
this.hide.current
}
makeBold(){
this.setState({bold: !this.state.bold});
this.checkInput.current
}
changeSize(){
this.setState({size: !this.props.size})
for(var i = this.props.size; i <= this.props.max; i++);
}
render() {
return(
<div>
<input type="checkbox" id="boldCheckbox" ref={this.hide} hidden={false} onClick={this.makeBold.bind(this)}/>
<button id="decreaseButton" ref={this.hide} hidden={false}>-</button>
<span id="fontSizeSpan" ref={this.hide} hidden={false}>{this.props.size}</span>
<button id="increaseButton" ref={this.hide} hidden={false} onClick={this.changeSize.bind(this)}>+</button>
<span id="textSpan" ref={this.checkInput} onClick={this.toggle.bind(this)}>{this.props.text}</span>
</div>
);
}
right now their hidden attribute is false so I can see them.Here's the html which is not much:
<div id='container'></div>
<script type="text/jsx">
ReactDOM.render(
<div>
<FontChooser min='4' max='40' size='16' text='You can change me!' bold='false'/>
</div>,
document.getElementById('container'))
;
</script>
So far all I have managed is for the browser console(I'm using Firefox react component addon) to confirm there is a functioning event that doesn't really work, as in when I click the text, the buttons or the input checkbox the props does change to false or true every click but that's about it.
I appreciate it if someone could guide me through this.
NOTE:
just in case nothing is imported, also I setup a local server with Nodejs

Here is an Example of what you want: https://codesandbox.io/s/mystifying-cookies-v7w3l?file=/src/App.js
Basically, I have 4 variables: text, fontWeight, fontSize and showTools.
Each button has its own task and also you can select if show or not.
In React you don't have to care about ids like in older frameworks. You can generate the elements just in the place where you are with the information which you need. So, basically, we have the 4 variables and use them wisely where we want (as styles props, as text and even as a conditional to show components). It's the magic of React and JSX.
In the code I've use hooks, part of the latest definition of React. For that my Components is functional and not a Class. it makes it easier and faster for examples and prototyping.
The tools are show by default just to let you play with it
import React from "react";
import "./styles.css";
export default function App() {
const [text, setText] = React.useState("");
const [boldFont, setBoldFont] = React.useState(false);
const [fontSize, setFontSize] = React.useState(14);
const [showTools, setShowTools] = React.useState(true);
return (
<div className="App">
<div
style={{
fontWeight: boldFont ? "bold" : "normal",
fontSize: `${fontSize}px`
}}
>
<span onClick={() => setShowTools(!showTools)}>
{text || "Text Example"}
</span>
</div>
{showTools && (
<div>
<button onClick={() => setBoldFont(!boldFont)}>Bold</button> |
<button onClick={() => setFontSize(fontSize + 1)}>A+</button>
<button onClick={() => setFontSize(fontSize - 1)}>a-</button>
<input
type="text"
value={text}
onChange={event => {
setText(event.target.value);
}}
/>
</div>
)}
</div>
);
}