First im more of a designer than developper. I have a code to detect if my browser is in mobile and portrait to change some class. I'm pretty sure this can be simplify

Tanks

window.addEventListener("load", function(){
        if( /Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent) &&  window.matchMedia("(orientation: portrait)").matches) {
                console.log("this is mobile and portrait");
        }else{
            console.log("this is not mobile");
        }
    });

    window.addEventListener("resize", function(){
        if( /Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent) &&  window.matchMedia("(orientation: portrait)").matches) {
                console.log("this is mobile and portrait");
        }else{
            console.log("this is not mobile");
        }
    });