// CashRegister.js
let cash = 0
const CashRegister = {
credit(amount) {
cash = cash + amount
return cash
},
debit(amount) {
if (amount <= cash) {
cash = cash - amount
return true
} else {
return false
}
},
total() {
return cash
},
}
module.exports = CashRegister
// App.js
const cashRegister = require('./CashRegister')
const cashRegister2 = require('./CashRegister')
cashRegister.credit(10)
cashRegister2.credit(20)
cashRegister.debit(5)
console.log(cashRegister.total()) // answer is 25 as both object are using same instance
Created 2019-01-23T11:45:03+05:18, updated 2020-08-21T10:16:12+05:18 · History · Edit