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closure.js
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37 lines (31 loc) · 774 Bytes
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// ==== Challenge 1: Write your own closure ====
// Write a simple closure of your own creation. Keep it simple!
const greetings = () => {
let name = "Lauren";
return {
hi: function () {
return `hi ${name}`;
},
bye: function () {
return `bye ${name}`;
}
}
}
// ==== Challenge 2: Create a counter function ====
let num = 0;
const counter = () => ++num;
const newCounter = counter;
console.log(newCounter()); // 1
console.log(newCounter()); // 2
// ==== Challenge 3: Create a counter function with an object that can increment and decrement ====
const counterFactory = () => {
let counter = 0;
return {
increment: function() {
return counter +=1;
},
decrement: function() {
return counter -=1;
}
}
};