BMI calculator (for Articulate Storyline)

bmiCalculator.js

var p = GetPlayer();

var BMI = 0;
var bodyDesc = "dummy";

// Convert input_feet, input_inches, and pounds from Storyline variables to JavaScript variables

var input_feet=(p.GetVar("input_feet"));
var input_inches=parseInt(p.GetVar("input_inches"));
var pounds=(p.GetVar("pounds"));

console.log("input_feet = " + input_feet);
console.log("input_inches = " + input_inches);
console.log("pounds = " + pounds);

// Calculate then square total inches

var feet_in_inches = input_feet * 12;
var inches = feet_in_inches + input_inches;
var inches_squared = inches * inches;

console.log("feet_in_inches = " + feet_in_inches);
console.log("inches = " + inches);
console.log("inches_squared = " + inches_squared);

// Calculate BMI

var bmi = Math.round(pounds * 703 / inches_squared);

console.log("bmi = " + bmi);

// Get body description

if (bmi > 0){

	if (bmi < 18.5){
		bodyDesc = "Underweight";
	}

	else if (bmi >= 18.5 && bmi <= 24.9){
		bodyDesc = "Healthy";
	}

	else if (bmi >= 25 && bmi <= 29.9){
		bodyDesc = "Overweight";
	}

	else if (bmi >= 30 && bmi <= 39){
		bodyDesc = "Obese";
	}

	else {
		bodyDesc = "Class 3 Obese";
	}

}

// Convert bmi and bodyDesc from JavaScript variables to Storyline variables

p.SetVar("bmi",bmi);
p.SetVar("bodyDesc",bodyDesc);

console.log("bodyDesc = " + bodyDesc);// JavaScript Document