<script>
var url=window.location.href
			var url="http://www.baidu.com/20210720/page1.html?username=karen&pwd=123&cb=fn&count=20"
			function querystringformart (url) {
				var obj={}
				var arr1=url.split("?")
				//console.log(re)
				if(arr1[1]){
					var arr2=arr1[1].split("&")//["username=karen","pwd=123","cb=fn","count=20"]
					arr2.map((el)=>{
						var arr3=el.split("=")//["username","karen"]
						obj[arr3[0]]=arr3[1]
					})
				}
				return obj
			}
			var queryobj=querystringformart(url)
			console.log(queryobj)