H5通過參數名獲取url中的參數值

/**
 * [通過參數名獲取url中的參數值]
 * 示例URL:http://htmlJsTest/getrequest.html?uid=admin&rid=1&fid=2&name=小明
 * @param  {[string]} queryName [參數名]
 * @return {[string]}           [參數值]
 */
function GetQueryValue(queryName) {
  var query = decodeURI(location.search.substring(1));
  var vars = query.split("&");
  for (var i = 0; i < vars.length; i++) {
    var pair = vars[i].split("=");
    if (pair[0] == queryName) {
      return pair[1];
    }
  }
  return null;
}