WhatsApp link

script.js

                function isMobileWA()
                {
                    return (/Android|webOS|iPhone|iPad|iPod|Windows Phone|IEMobile|Mobile|BlackBerry/i.test(navigator.userAgent) ); 
                }
                var elm = jQuery('a[href*="whatsapp.com"]');
                jQuery.each(elm, function(index, value){
                    var item = jQuery(value).attr('href');
                    if(item.indexOf('chat') != -1){
                        //nothing
                    } else if (item.indexOf('web.whatsapp') != -1 && isMobileWA()){
                        var itemLink = item;
                        var newLink = itemLink.replace('web.whatsapp', 'api.whatsapp');
                        jQuery(value).attr("href", newLink);
                    } else if (item.indexOf('api.whatsapp') != -1 && !isMobileWA()){
                        var itemLink = item;
                        var newLink = itemLink.replace('api.whatsapp', 'web.whatsapp');
                        jQuery(value).attr("href", newLink);
                    } 
                });