$('.product-card .selected-variation').each(function() {
	var name = jQuery(this).attr('data-name');
	var val = jQuery(this).attr('data-val');
	var info = name+': '+val; ??????
});
alert(info);

($.fn.concat=function(str1,str2){
    return Object.values(arguments).join('');
})();

$('.product-card .selected-variation').each(function() {
	var name = jQuery(this).attr('data-name');
	var val = jQuery(this).attr('data-val');
	var info = jQuery(this).concat(name+': '+val);
});
alert(info);

var info = [];

$('.product-card .selected-variation').each(function() {
   info.push(this.dataset.name + ': ' + this.dataset.val);
});

alert( info );
alert( info.join('&') );
alert( info.join(' ') );