How can I dynamically modify CSS class property values using JavaScript?

Dynamically Modifying CSS Class Property Values Using JavaScript / jQuery

You have encountered a situation where you wish to dynamically assign a value to a CSS style, specifically for a class property that affects multiple elements in a slideshow. This requires directly modifying the CSS stylesheet, rather than simply adjusting element attributes.

Using a CSS Editing Library

While some may suggest otherwise, it is possible and efficient to edit CSS stylesheets with JavaScript. One recommended approach is to utilize the jss library.

import jss from 'jss';

const stylesheet = jss.createStyleSheet({
  myClass: {
    fontSize: '2rem',
  },
});

Modifying a Single Item

To change the CSS class property values for a specific element, target it with a query selector and use the rule() method.

const element = document.querySelector('.myClass');
stylesheet.rule('.myClass').style({
  color: 'red',
});

Modifying Multiple Items Simultaneously

To modify the CSS class property values for all elements in a group, loop through them using the class name and the apply() method.

const elements = document.querySelectorAll('.myClass');
stylesheet.rule('.myClass').unfolded().apply(elements);

By utilizing a CSS editing library and employing efficient techniques, you can dynamically modify CSS class property values on the fly with JavaScript, eliminating the need to specify individual property values for each element.

The above is the detailed content of How can I dynamically modify CSS class property values using JavaScript?. For more information, please follow other related articles on the PHP Chinese website!