JS/main.js

// Calc
var comp = 3; //number of computers
comp = prompt('Enter number of computers');
var equipment = 9; // Home appliances
equipment = prompt('Enter numbers of appliances');
var compWatt = comp*350; //comps energy consumption
var equipmentWatt = equipment*500; //home allpiances energy consumption
var result = compWatt+equipmentWatt; //all energy consumption per hour
alert('Your energy consumption '+result+'Watt per hour');