I am new to JavaScript. I have this piece of code. I need to print the following:
//counter() should return the next number.
//counter.set(value) should set the counter to value.
//counter.decrease() should decrease the counter by 1
function makeCounter() {
let count = 0;
function counter() {
return count++;
}
counter.decrease = function () {
return count--;
};
counter.set = function (value) {
return count = value;
};
}
How can I call the 3 nested functions outside?
You just have to return your counter.
function makeCounter() {
let count = 0;
function counter() {
return count++;
}
counter.decrease = function () {
return count--;
};
counter.set = function (value) {
return count = value;
};
return counter;
}
const myCounter = makeCounter();
console.log(myCounter()); // 0
console.log(myCounter()); // 1
console.log(myCounter.set(42)); // 42
console.log(myCounter()); // 42 (*see why next)
console.log(myCounter.decrease()); // 43 (*see why next)
console.log(myCounter()); // 42count++ because it returns count then add 1. If you want to add 1 then return the new value of count, please write ++count.