Get parameter from URL query(search) string

getQueryString.js

/**
 * Get parameter from URL query(search) string
 *
 * Example:
 * ```
 * var id = getQueryString('id')
 * ```
 *
 * @param {string} name
 * @returns {string}
 */
function getQueryString(name) {
  var result = location.href.match(new RegExp("[\?\&]" + name + "=([^\&]+)", "i"));
  if (result == null || result.length < 1) {
    return "";
  }
  return decodeURIComponent(result[1]);
};

example??

var id = getQueryString('id')