Let's say I have a factory like this:
const itemFactory = () => {
const itemName = ''
const firstMethod = () => {
// something goes here
}
return { itemName, firstMethod }
}
Is there a way I can keep track of how many items I have created with that function?
I want to include an index in the itemName property of each item, like this: item0, item1, item2, etc.
You can use higher-order function to achieve that:
const createItemFactory = () => {
let currentItem = 0;
return () => {
const itemName = 'item' + currentItem++;
const firstMethod = () => {
// something goes here
}
return { itemName, firstMethod };
}
}
you can then create an itemFactory:
const itemFactory = createItemFactory();
const item0 = itemFactory();
console.log(item0.itemName); // item0;
const item1 = itemFactory();
console.log(item1.itemName); // item1;