Get URL Parameter

get_url_param.js

function getUrlParam(url) {
  if (url) {
    var query = url.split('?');
    if (query[1]) {
      var data = {};
      var queries = query[1].split('&');
      for (var i = 0; i < queries.length; i++) {
        var item = queries[i].split('=');
        data[item[0]] = decodeURIComponent(item[1]);
      }
      return data;
    }
  }
  return '';
}