Numbers and Strings in Javascript

I am having trouble with Numbers and Strings. Below give me all “NaN”. What is a substitute for Number()?

function Button1_Click(){
var mo = Number(Textbox1.Value);
var dy = Number(Textbox2.Value);
var yr = Number(Textbox3.Value);
var hr = Number(Textbox5.Value);
var mn = Number(Textbox6.Value);
var ampm = Selectbox1.Value;
var tz = Number(Selectbox2.Value);
var dst = Number(Selectbox3.Value);
if ((ampm == “AM”) && (Number(hr) == 12)){
var hr24 = 0;
}
if ((ampm == “AM”) && (Number(hr) < 12)){
var hr24 = Number(hr);
}
if ((ampm == “PM”) && (Number(hr) < 12)){
var hr24 = Number(hr) + 12;
}
if ((ampm == “PM”) && (Number(hr) == 12)){
var hr24 = 12;
}
if (Number(mo) <= 2){
var y = Number(yr) - 1;
var m = Number(mo) + 12;
}else{
var y = Number(yr);
var m = Number(mo);
}
var Bjd = Math.floor(Number(y) / 400) - Math.floor(Number(y) / 100);
var JD0 = Math.floor(365.25 * (Number(y) + 4716)) + Math.floor(30.6001 * (Number(m) + 1)) + Number(Bjd) + -1522.5 + Number(dy);
var JD = Number(JD0) + (Number(hr24) + Number(mn) / 60 - (Number(tz) + Number(dst))) / 24;
var J = (Number(JD) - 2451545) / 36525;
var d2000 = (Number(JD) - 2451545);
var J0 = (Number(JD0) - 2451545)/36525;
var d0 = (Number(JD0) - 2451545);
var d02000 = (Number(JD0) - 2451545);
var JDlocal = (Number(JD0) + (Number(hr24) + Number(mn) / 60));
var Jlocal = (Number(JDlocal) - 2451545);
var d2000local = (Number(JDlocal) - 2451545);
}

Well, what inputs are you feeding them? I have a feeling they’re not the value you expect.

To clarify

Number(Textbox1.Value)

You say that this is giving you NaN, so I think you should check the value of Textbox1.Value. I suspect that it’s undefined.

Textbox1.value and Selectbox1.value are my inputs and outputs. They are strings. the var Jlocal are Strings or Floats or numbers.

The property is value not Value (lower case v)

Have you added

console.log(Textbox1.Value);

to the top of the function to confirm that assumption?