My JavaScript If-Else statement is not working properly

I want to make a simple log in form with a button to save everything. It will give negative feedback when not everything is filled in properly. Even after a long time of searching I did not find why this didn't work:

function Saved(){
  if('Name'.value==null)
    {
    document.getElementById("Saved").innerHTML = "Your data has been saved.";
    }
  else
    {
      alert("Please fill in everything.");
    }
}