Question

What is the proper way to add the sum of multiple variables in Javascript?

This is what I’m trying to do. I’ve tried it with and without the quotes around my variables. I’m not getting a NaN or an Undefined or anything. No output whatsoever.

function setstat(){
document.getElementById('date').value = window.opener.document.getElementById('thisday').value;
document.getElementById('name').value = window.opener.document.getElementById('element_7').value;
document.getElementById('time').value = window.opener.document.getElementById('stwa').value;

inbcalls = window.opener.document.getElementById('element_6').value;
document.getElementById('totinb').value = inbcalls;
inbcallsp = parseInt("inbcalls",10);
asaptotal = window.opener.document.getElementById('asapcalls').value;
document.getElementById('asaptot').value = asaptotal;
asaptotalp = parseInt("asaptotal",10);
faxtotal = window.opener.document.getElementById('faxcalls').value;
document.getElementById('faxtot').value = faxtotal;
faxtotalp = parseInt("faxtotal",10);
obtotal = window.opener.document.getElementById('obcalls').value;
document.getElementById('obtot').value = obtotal;
totalcalls = inboundcallsp + asaptotalp + faxtotalp + obtotalp;
document.getElementById('totsum').value = totalcalls;
}

Answer 1

Why are you quoting the variable names?

inbcallsp = parseInt("inbcalls",10);

should be:

inbcallsp = parseInt(inbcalls, 10);

And the same for the rest of them. You want to parse the value of the variables, not the names of the variables; those will always result in NaN.