How Can I Access and Modify the Style Properties of CSS Pseudo-elements (::before, ::after) Using jQuery?

Accessing Style Properties of Pseudo-Elements in jQuery

This article delves into the issue of accessing style properties of pseudo-elements, such as ::before and ::after, using jQuery.

In CSS, pseudo-elements are used to modify the appearance of elements, but they cannot be targeted directly with jQuery selectors. By nature, pseudo-elements insert content before or after the target element and cannot be individually styled.

For example, if you have the following CSS rule:

.example::before {
  content: "Added Text";
}

Trying to select the pseudo-element using jQuery, like this:

$(".example::before").css("color", "red");

will not work. Instead, you need to target the parent element and use the :has() selector to select elements that have a specific pseudo-element:

$(".example:has(::before)").css("color", "red");

Alternatively, you can use the jQuery.cssRules() plugin to access and modify CSS rules directly:

var rules = jQuery.cssRules();
for (var i = 0; i < rules.length; i++) {
  if (rules[i].selectorText === ".example::before") {
    rules[i].style.color = "red";
  }
}

However, it's important to note that this approach is limited by browser support and compatibility issues.

In summary, while it's not possible to directly select pseudo-elements with jQuery selectors, there are alternative methods that can be used to access and modify their style properties.

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