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// ==== Challenge 1: Write your own closure ====
// Write a simple closure of your own creation. Keep it simple!
const greet = () => {
let person = {
firstName: 'Erinc',
lastName: 'Emer'
};
const hello = () => {
return `Hello ${person.firstName} ${person.lastName}`
}
return hello()
}
// ==== Challenge 2: Create a counter function ====
const counter = () => {
// Return a function that when invoked increments and returns a counter variable.
let count = 0;
return () => {
count++;
return count;
}
};
// Example usage: const newCounter = counter();
// newCounter(); // 1
// newCounter(); // 2
// ==== Challenge 3: Create a counter function with an object that can increment and decrement ====
const counterFactory = () => {
// 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.
let count = 0;
return {
increment: function () {
count++;
return count;
},
decrement: function () {
count--;
return count;
}
}
};