I know javascript in the beginning level, but I have a problem.

I have 7 input elements in a form and I want all of them to be filled.
I came up with this idea but it looks disgusting.

Can someone help me how to check whether all form elements are filled or not?

function validateForm()

{

var x=document.forms[register][name].value;

var y=document.forms[register][phone].value;

var z=document.forms[register][compname].value;

var q=document.forms[register][mail].value;

var w=document.forms[register][compphone].value;

var e=document.forms[register][adres].value;

var r=document.forms[register][zip].value;

if (x==null || x== || y==null || y== || z==null 

|| z== || q==null || q== ||  w==null || w== || e==null || e== 

|| r==null || r==)

{

alert(Please fill all the inputs);

return false;

}

}

</script>