[рони]

Retro_1477,
Получить get параметры с url
ruslan_mart,

function $_GET(key,url) {
  var s = url||window.location.search;
  s = s.match(new RegExp(key + '=([^&=]+)'));
  return s ? s[1] : false;
}
var url = "http://localhost:3000/product?product=4";
alert($_GET("product",url));