Why document.location.href is not working inside if condition inside javascript

I am working on creating a web application and have set up a login page using html. In the login page, the following script was placed and document.location.href = "\doctorhome.php"; is not working inside the if condition. The code redirects to doctorhome.php if I keep the code without a loop(but this does not validate the login info). Can someone please help me with this issue as this is the main thing blocking the completion of my project.

Javascript code I am using is provided below for reference:

<script>
function myFunction() 
{
    var x = document.getElementById("dname").value;
    var y = document.getElementById("password").value;
    if(x=="admin123"&&y=="root")
    {
        alert("Login successful");
        document.location.href = "\doctorhome.php"; 
    }
    else
    {
        alert("Incorrect credentials");
    }
}
</script>