Implement location.href through a under IE to obtain the value of referer_javascript skills

Recently, the company website needs to count the data from which pages users enter the registration page. To start, simply get it via $_SERVER['HTTP_REFERER'] (php) on the server side. However, it was found that many registered users did not have a referer value. Later, I checked that if the window.location.href method is used to jump under IE, the referer value is empty. If you jump inside the tag , the referer will not be empty. Therefore, this IE problem can be solved with the following code:

function gotoUrl(url){ 
if(document.all){ 
var gotoLink = document.createElement('a'); 

gotoLink .href = url; 

document.body.appendChild(gotoLink); 

gotoLink .click(); 

} 
else window.location.href = url; 
}

The principle is to create a tag , then set the URL address that needs to be redirected, and finally trigger the click event.