It's very simple but I don't know JS

Hello guys, I'm new at JS, I just have a quick question,
what's wrong with this code?

		abc = window.location;
		if(abc == ""){
		ivir = 0;
		}	

		if(ivir == 0){
		alert("no url!")
		}else{
		alert("you are at" + abc)
                }

Code (markup):

thank you all

 

Try this :

<script>
    var abc = window.location.href;
    if(abc.length == 0)
    {
        alert("no url!");
    } else {
        alert("you are at :" + abc);
    }
    </script>

HTML:

 

work very good tvoodoo, thank you very much

 

You're welcome