获取url中参数

// 创建一个URLSearchParams实例
const urlSearchParams = new URLSearchParams(window.location.search);
// 把键值对列表转换为一个对象
const params = Object.fromEntries(urlSearchParams.entries());

function getParams(url) {
    
    
  const res = {
    
    }
  if (url.includes('?')) {
    
    
    const str = url.split('?')[1]
    const arr = str.split('&')
    arr.forEach(item => {
    
    
      const key = item.split('=')[0]
      const val = item.split('=')[1]
      res[key] = decodeURIComponent(val) // 解码
    })
  }
  return res
}