How to get current URL with JavaScript? [duplicate]

Question

I have this portion of the code. I want to know how can I read the url as the current page instead a fix url

Here is the portion of the coding:

var str='';
      if(model_id != 0 ) str = model_id+"+";
      if(year_id != 0 ) str +=year_id+"+"; 
      url='http://store.ijdmtoy.com/SearchResults.asp?Search='+str;
top.location.href=url;

You see currently it has a fix reading the url http://store.ijdmtoy.com/SearchResults.asp

For example, I am currently on http://store.ijdmtoy.com/abs.htm

How can I change the code so it will automatically read as http://store.ijdmtoy.com/abs.htm?searching=Y&Search

Answer 1

If you are currently on http://store.ijdmtoy.com/abs.htm then document.URL will be http://store.ijdmtoy.com/abs.htm.

You can try:

url = location.protocol + '//' + location.host + location.pathname + '?Search=' + str;