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// ==== Challenge 1: Write your own closure ====
// Write a simple closure of your own creation. Keep it simple!
const multiplyByFour = () => {
const four = 4
showAnswer = () => {
console.log(four * 3);
}
showAnswer()
}
multiplyByFour()
// ==== Challenge 2: Create a counter function ====
const counter = () => {
let count = 1;
return function(){
return count++;
};
// Return a function that when invoked increments and returns a counter variable.
};
const newCounter = counter();
// Example usage: const newCounter = counter();
console.log(newCounter()); // 1
console.log(newCounter()); // 2
console.log(newCounter());
/* STRETCH PROBLEM, Do not attempt until you have completed all previous tasks for today's project files */
// ==== Challenge 3: Create a counter function with an object that can increment and decrement ====
// Return an object that has two methods called `increment` and `decrement`.
// `increment` should increment a counter variable in closure scope and return it.
// `decrement` should decrement the counter variable and return it.
const counterFactory = () => {
let counter = 0;
let increment = () => counter += 1;
let decrement = () => counter -= 1;
let myFunctions = {increment, decrement};
return myFunctions;
};
let newFactory = counterFactory()
console.log(newFactory.increment())
console.log(newFactory.increment())
console.log(newFactory.increment())
console.log(newFactory.decrement())