// url参数解析
function getUrlkey(url) {
  var params = {};
  var urls = url.split("?");
  var arr = urls[1].split("&"); 
  for (var i = 0, l = arr.length; i < l; i++) {
    var a = arr[i].split("=");
    params[a[0]] = a[1];
  } 
  return params;
}