有没有办法通过查找构造函数来获取类的名称

Question

I am trying to get a classes name through the name of a constructor in a class similar to what they have as the answer for this ask How to get a JavaScript object's class?

What I want to do, is find the item with the id of 0 and get the second constructor of name

class item {
    constructor(id, name, price) {
        this.id = id
        this.name = name
        this.price = price
    }
const Bar = new item(0, "Candy bar", "$1") 
const Gum = new item(1, "Gum, "$.5")

I need to be able to grab, any id such in this case 1, and use it to find the item's name

So I want to do something close to

var thisItem = item.with.id = 1
console.log(thisItem.name)

Answer 1

You could just do that using Map it allows you to save the data with key and value like this

and it has a lot of functionality that may help like has , get and so on

 const data = new Map(); data.set(1, {name: 'john', price: 145}); data.set(2, {name: 'taylor', price: 20}); if(data.has(1)){ console.log(data.get(1).name); } data.forEach((el) => { console.log(el); });

Answer 2

Sorry for all the confusion, @DaveNewton helped me figure it out

class item {
    constructor(id, name, price) {
        this.id = id
        this.name = name
        this.price = price
        items.push([id, name, price])
    }
}

i have this.push in the item class, and I can use the items[] now to sort through