Get parameters on link

getParams(url){
    let str=url.split('?')[1]//? What's behind the number is what we need name=quan&age=21&sex=1
    let arr=str.split('&')//["name=quan", "age=21", "sex=1"]
    let obj={}
    for(let i=0;i<arr.length;i++){
        let key=arr[i].split('=')//["name", "quan"] ["age", "21"] ["sex", "1"]
        obj[key[0]]=key[1]
    }
    return obj
  },