If-Else syntax and variables refreshing on ux

General
1

Hello! I am literally just an equation away from finishing my quick app (I hope!)
I am having trouble getting the correct syntax down for an if-else equation. I’ll Post the code below and also a link to my github page.
Anyways, I have the ux page set up so if someone wants to order multiple car services, they can select multiple buttons and the bottom of the page will shows the accumulated price. I can tell from the debug_log that my function for Clicking the button works and also that the counter needed for the equation works. The problem is that the if-else statement always does the IF block of code and never the ELSE block of code. Also, the IF block changes the variable ‘fillGasTank’ correctly but the variable ‘totalCost’ that displays on the bottom of the page does not reflect a new value being added. Any help would be great. I couldn’t find any fuse specific reference for the .js if-else code so I’ve been using this website https://www.w3schools.com/js/js_if_else.asp

for just the snippet of code here is the equation in question

var gasCount = 0;
var gasEmail = Observable("---");
function gasClick() {
	gasCount += 1;
	debug_log(gasCount);
//tried to use if (odd(gasCount) = true) {} but always errors
    if (gasCount = 1 || 3 || 5 || 7 || 9 || 11 || 13 || 15) { 
	   gasEmail = Observable("Fill Gas Tank");
	   fillGasTank = 15;
       debug_log(fillGasTank);
}       else {
		  gasEmail = Observable("---");
		  fillGasTank = 0;
}};

and here is the entire page and below that is the entire project on github

var Observable = require("FuseJS/Observable");
var Storage = require("FuseJS/Storage");
//var email = require('FuseJS/Email');


var pData = "pData.json";
var flname = Observable("---");
var phonenumber = Observable("---");
var	email = Observable("---");
var	pickup = Observable("---");
var	gatecode = Observable("---");

Storage.read(pData).then(
	function(content) {
    debug_log("Content Found in pData");
    var data = JSON.parse(content);

	flname.value = data.flname;
    phonenumber.value = data.phonenumber;
    email.value = data.email;
    pickup.value = data.pickup;
    gatecode.value = data.gatecode;
   },
   function(error) {
    //For now, let's expect the error to be because of the file not being found.
    debug_log("No Storage File Found");
    flname.value = "No";
    phonenumber.value = "Storage";
    email.value = "Found";
});

var v1Data = "v1Data.json";
var	vyear1 = Observable("---");
var	vmake1 = Observable("---");
var	vmodel1 = Observable("---");
var	fueltype1 = Observable("---");
var	oiltype1 = Observable("---");

Storage.read(v1Data).then(
	function(content) {
    debug_log("Content Found in v1Data");
    var data = JSON.parse(content);

	vyear1.value = data.vyear1;
    vmake1.value = data.vmake1;
    vmodel1.value = data.vmodel1;
    fueltype1.value = data.fueltype1;
    oiltype1.value = data.oiltype1;
   },
   function(error) {
    //For now, let's expect the error to be because of the file not being found.
    debug_log("No Storage File Found");
    vyear1.value = "No";
    vmake1.value = "Storage";
    vmodel1.value = "Found";
});

var tripCharge = 50;
var fillGasTank = 0;
var carWashVaccum = 0;
var rotateTires = 0;
var changeOil = 0;
var detailInterior = 0;
var totalCost =tripCharge+fillGasTank+carWashVaccum+rotateTires+changeOil+detailInterior;

var date = Observable("Edit Next");
var sasiEmail = Observable("Edit Next");
var subject = Observable("Edit Next");
var bodyMessage = Observable("Edit Next");

var gasCount = 0;
var gasEmail = Observable("---");
function gasClick() {
	gasCount += 1;
	debug_log(gasCount);
    if (gasCount = 1 || 3 || 5 || 7 || 9 || 11 || 13 || 15) { //tried to use if (odd(gasCount) = true) {} but always errors
	   gasEmail = Observable("Fill Gas Tank");
	   fillGasTank = 15;
       debug_log(fillGasTank);
}       else {
		  gasEmail = Observable("---");
		  fillGasTank = 0;
}};
 

function cancelService1() {
	router.goBack();
}

function confirmService1() {
	//email.compose(sasiEmail,"","",subject,bodyMessage)
	router.goto("home");
}

module.exports = {
	totalCost: totalCost,
	gasClick: gasClick,

	cancelService1: cancelService1,
	confirmService1: confirmService1
};

github:

2

fixed it!
Here’s my new equation

var gasCount = 0;
var gasEmail = Observable("---");
function gasClick() {
        if (gasCount == 1) {
            gasCount -= 1;
            fillGasTank.value = 0;
            gasEmail = Observable("---");
            totalCost.value = tripCharge.value+fillGasTank.value+carWashVaccum.value+rotateTires.value+changeOil.value+detailInterior.value;
           debug_log(gasCount); 
           debug_log(gasEmail.value);
        } else {
            gasCount += 1;
            fillGasTank.value = 15;
            gasEmail = Observable("Fill Gas Tank");
            totalCost.value = tripCharge.value+fillGasTank.value+carWashVaccum.value+rotateTires.value+changeOil.value+detailInterior.value;
            debug_log(gasCount);
            debug_log(gasEmail.value);
        }
}