Simple BMI Calculator Lambda function

index.js

'use strict';

exports.handler = function(event, context, callback){
    
    var height = event.height;
    var weight = event.weight;

    var bmi = weight/(height * height) * 10000;
    bmi = Math.round ( bmi * 100 )  / 100;

    if (bmi < 18.5) {
        var category = "Underweight";
    }
    else if((bmi >= 18.5) && (bmi <= 24.9)) {
        var category  = "Normal";
    } else if((bmi >= 25) && (bmi <= 29.9)) {
        var category  = "Overweight";
    }
    else if(bmi >= 30) {
        var category  = "Obese";
    }

    var result = {
        bmi: bmi,
        category: category
    };

    callback(null, result);
}