html 进入页面5秒后让页面再刷新一次仅一次

<Script>
		function refresh(){
		  
		    url = location.href;
		 
		    console.log(url);
		    var once = url.split("#");
		 
		    if (once[1] != 1) {
		 
		         url += "#1";
		 
		        self.location.replace(url);
		 
		        window.location.reload();
		 
		    }
		}
		 
		setTimeout('refresh()', 5000); // 5s后刷新
  
</script>