Write Media Queries with JavaScript Code

const mq = window.matchMedia( "(min-width: 500px)" );

if (mq.matches) {
// window width is at least 500px
} else {
// window width is less than 500px
}

You can also add an event listener which fires when a change is detected:

// media query event handler
if (matchMedia) {
const mq = window.matchMedia("(min-width: 500px)");
mq.addListener(WidthChange);
WidthChange(mq);
}

// media query change
function WidthChange(mq) {
if (mq.matches) {
// window width is at least 500px
} else {
// window width is less than 500px
}

}

References
https://www.sitepoint.com/javascript-media-queries/