Ways to change the background image when hovering in a React component

Question

Ways to change the background image when hovering in a React component

I'm having trouble trying to scale my background image by 1.5 when the user's mouse enters. Here is the code I have so far:

import React from 'react';
import Slider from './index';
import horizontalCss from './css/horizontal.scss';
import content from './content';
import SourceView from './SourceView';
import './css/styles.scss';

function Autoplay() {
return (
<div>

<Slider classNames={horizontalCss} autoplay={3000}>
{content.map((item, index) => (
<div
key={index}

style={{ background: `url('${item.image}') no-repeat center center`, 
                           '&:hover': {
background: 'white',
transform: 'scale(1.5)',
}, }}
>
<div className="center">
<div className="textWrapper">
<h2>{item.title}</h2>
</div>
</div>
</div>
))}
</Slider>

</div>
);
}

export default Autoplay;

What adjustments should I make to get this working properly?

javascript css reactjs

Answer 1

Answer №1

It has been noted by several individuals that the issue lies not with React, but with the style property in HTML lacking support for CSS selectors like :hover. It should also be mentioned that &:hover is not considered valid CSS, but rather valid SCSS when preprocessed by your chosen webpacker.

The styles specific to hovering on your <div> element do not react as intended, so they could easily be placed within a class instead.

.my-image-class {
  background-repeat: no-repeat;
  background-position: center;

  &:hover {
    background: white;
    transform: scale(1.5);
  }
}

You can then switch the background image when not hovering using:

<div
  key={index}
  className="my-image-class"
  style={{ background: `url('${item.image}') }} 
>

For added sophistication, consider making your hover image reactive. The approach outlined above may prove inadequate. Check out Kalabasa's answer which leverages dynamic CSS variables (MDN docs) for responsive class properties.

You would define your backgrounds in the class like this:

.my-image-class {
  background-image: var(--my-image);
  background-repeat: no-repeat;
  background-position: center;

  &:hover {
    background-image: var(--hover-image);
    transform: scale(1.5);
  }
}

Then update the variables dynamically:

<div
  key={index}
  className="my-image-class"
  style={{ '--my-image': `url(path)`; '--hover-image': `url(other-path)` }} 
>

Answer 2

It has been noted by several individuals that the issue lies not with React, but with the style property in HTML lacking support for CSS selectors like :hover. It should also be mentioned that &:hover is not considered valid CSS, but rather valid SCSS when preprocessed by your chosen webpacker.

The styles specific to hovering on your <div> element do not react as intended, so they could easily be placed within a class instead.

.my-image-class {
  background-repeat: no-repeat;
  background-position: center;

  &:hover {
    background: white;
    transform: scale(1.5);
  }
}

You can then switch the background image when not hovering using:

<div
  key={index}
  className="my-image-class"
  style={{ background: `url('${item.image}') }} 
>

For added sophistication, consider making your hover image reactive. The approach outlined above may prove inadequate. Check out Kalabasa's answer which leverages dynamic CSS variables (MDN docs) for responsive class properties.

You would define your backgrounds in the class like this:

.my-image-class {
  background-image: var(--my-image);
  background-repeat: no-repeat;
  background-position: center;

  &:hover {
    background-image: var(--hover-image);
    transform: scale(1.5);
  }
}

Then update the variables dynamically:

<div
  key={index}
  className="my-image-class"
  style={{ '--my-image': `url(path)`; '--hover-image': `url(other-path)` }} 
>

Answer 3

Answer №2

When using Inline Style, keep in mind that it doesn't accommodate pseudo selectors. It is recommended to transfer your hover style css to your styles.scss file and opt for using a className or id instead.

Answer 4

When using Inline Style, keep in mind that it doesn't accommodate pseudo selectors. It is recommended to transfer your hover style css to your styles.scss file and opt for using a className or id instead.

Answer 5

Answer №3

Are you searching for a similar effect? Check out this Demo on stackblitz. It enlarges the block when hovered over. If Stackblitz is not accessible, here is the code snippet:

styling :

html, body, #app {
  margin: 0;
  padding: 0;
  position: relative;
}
.app-component{
  position: absolute;
  width: 300px;
  height: 200px;
  background-image: url('https://picsum.photos/200/300');
  background-size: cover;
  border: 1px solid black;
  top:100px;
  left:100px;
}

.app-component:hover{
  transform: scale(1.5);
  transition:transform 1s linear;
}

app structure:

import React, { Component } from 'react';
import { render } from 'react-dom';
import './style.css';

const App = () => {
    return (
      <div className="app-component">
      </div>
    );
}

render(<App />, document.getElementById('root'));

It's recommended to handle this in your CSS rather than using inline styles whenever possible.

Answer 6

Are you searching for a similar effect? Check out this Demo on stackblitz. It enlarges the block when hovered over. If Stackblitz is not accessible, here is the code snippet:

styling :

html, body, #app {
  margin: 0;
  padding: 0;
  position: relative;
}
.app-component{
  position: absolute;
  width: 300px;
  height: 200px;
  background-image: url('https://picsum.photos/200/300');
  background-size: cover;
  border: 1px solid black;
  top:100px;
  left:100px;
}

.app-component:hover{
  transform: scale(1.5);
  transition:transform 1s linear;
}

app structure:

import React, { Component } from 'react';
import { render } from 'react-dom';
import './style.css';

const App = () => {
    return (
      <div className="app-component">
      </div>
    );
}

render(<App />, document.getElementById('root'));

It's recommended to handle this in your CSS rather than using inline styles whenever possible.

Ways to change the background image when hovering in a React component

Answer №1

Answer №2

Answer №3

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