小程序扫普通二维码获取参数信息示例

onLoad: function (options) {
    if (options.q) {
      let queryAll = decodeURIComponent(options.q);
      let id = gup('id', queryAll);
      //console.log(queryAll);
      //console.log(id);
    }
  },

/**
 * 获取URL中某个字符串字段
 * gup('id', 'https://www.lubanso.com/wx/home/?id=bHViYW5zb7W7DJI=&jhkfdhkjfda')
 * //===> bHViYW5zb7W7DJI=
 */
function gup(name, url) {
  if (!url) url = location.href;
  name = name.replace(/[\[]/, "\\\[").replace(/[\]]/, "\\\]");
  var regexS = "[\\?&]" + name + "=([^&#]*)";
  var regex = new RegExp(regexS);
  var results = regex.exec(url);
  return results == null ? null : results[1];
}