Can CSS be used to communicate to JavaScript which media queries are currently in effect?

Is there a way for Javascript to detect when a specific CSS media query is active without repeating the conditions of the media query in Javascript? Perhaps something similar to an HTML data attribute, but for CSS.

For example:

CSS

@media (min-width: 94em) {
    .menu{
        -data-break: sidebar-open;
    }
}

Javascript

if( $('.menu').cssData('break') == 'sidebar-open' ){
     ...
}

I want a side drawer to automatically open when the window reaches a certain width and a specific media query is activated.

I understand I could achieve this by checking the window's width in Javascript, but I'm looking for a solution that doesn't involve duplicating the width variable. Additionally, I am aware that I could make the Javascript code dependent on the CSS rules inside the media query, but that wouldn't be practical in this scenario.

javascriptcssmedia-queries

Answer №1

Although unconventional, one potential workaround is to designate the content property for a specific target element.

@media ...
    #target {
        content: "sidebar-open";
    }

Even though the element is not a :before or :after element, the content will be computed as none for display purposes. However, you can still retrieve the value using Javascript:

$('#target').css('content'); //"sidebar-open"

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