essence-core/src/utils/Client.js

Essence Core - Essence components

function isMobile() {
    if (navigator.userAgent.match(/Android/i) ||
        navigator.userAgent.match(/webOS/i) ||
        navigator.userAgent.match(/iPhone/i) ||
        navigator.userAgent.match(/iPad/i) ||
        navigator.userAgent.match(/iPod/i) ||
        navigator.userAgent.match(/BlackBerry/i) ||
        navigator.userAgent.match(/Windows Phone/i)
    ) {
        return true;
    } else {
        return false;
    }
}

function screenSize() {
    var screenWidth = screen.width;

    if (screenWidth <= 360) {
        return 1; // "small";
    } else if (screenWidth > 360 && screenWidth <= 800) {
        return 2; // "medium";
    } else {
        return 3; // "large";
    }
}

function documentSize() {
    var docSize = document.querySelector("body").offsetWidth;

    if (docSize <= 480) {
        return 1; // "small";
    } else if (docSize > 480 && docSize <= 768) {
        return 2; // "medium";
    } else {
        return 3; // "large";
    }
}

module.exports = {
    isMobile: isMobile,
    screenSize: screenSize,
    documentSize: documentSize
};