/**

* 解析url参数

* @example ?id=123456&a=b

* @return Object {id:12345,a:b}

*/

export function urlParse() {

  // 正则表达式方法

  let url = window.location.search;

  let obj = {};

  let reg = /[?&][^?&]+=[^?&]+/g;

  let arr = url.match(reg);

  // ['?id=12345', &a=b]

  if (arr) {

    arr.forEach((item) => {

      let tempArr = item.substring(1).split('=');

                      // 去掉? & 并以 '='分隔

      let key = decodeURIComponent(tempArr[0]); // 对非标准字符串进行解码

      let val = decodeURIComponent(tempArr[1]);

      obj[key] = val;

    });

  };

  return obj;

};

let queryParam = urlParse();

console.log(queryParam.id);