1、函数处理地址

const getUrlCode=(name)=>{
  return decodeURIComponent((new RegExp('[?|&]' + name + '=' + '([^&;]+?)(&|#|;|$)').exec(location.href) || [, ''])[1].
  replace(/\+/g, '%20')) || null  //把下面这行拼上去
}

//调用
let url = location.href
let code = getUrlCode('code')

2、截取

// actNo.value = location.href.split('?')[1].split('=')[1];