Please help, simple JS string question

I would like a function that will redirect my users to a product.php?id=id (where id is the product id)
Ok...

So ... the problem is this:

this will output ... product1, product2

but if i do something like:

then it will only redirect to product.php, everything after the ? will be removed. I tried to put \? but still the same.

 

I think this is due to the fact that your code will produce the string:

product.php?idid

Code (markup):

This to the browser would mean to send to the server a variable "idid", which doesn't have a value and thus will be discarded.
Instead add a "=" sign like this:

function remove(id)
{  

window.location="product.php?id="+id;  

} 

Code (markup):

and everything should work fine.