vue截取URL中的参数

http://localhost:81/login?redirect=%2Findex&access_token=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJvdUV4dGVybmFsSWQiOiI0OTI2MjYzMTIxMDU1NDAxMTM4IiwiYXVkIjpbImVudGVycHJpc2VfbW9iaWxlX3Jlc291cmNlIiwiYmZmX2FwaV9yZXN

 let url = window.location.href ;             //获取当前url
    let  dz_url = url.split('#')[0];                //获取#/之前的字符串
    let  cs = dz_url.split('?')[1];                //获取?之后的参数字符串
    let  cs_arr = cs.split('&');                    //参数字符串分割为数组
    let params = {};
// 遍历数组，将键值对保存到params对象中
    cs_arr.forEach(pair => {
      let keyValue = pair.split('=');
      params[keyValue[0]] = keyValue[1];
    });
// 提取access_token的值
    let accessToken = params['access_token'];