How can I write an object method in JavaScript

Question

I have an object method that doesn't work and it's giving me this error:

buyBike: (money) => {
    ^^^^^^^

SyntaxError: Unexpected identifier
    at wrapSafe (internal/modules/cjs/loader.js:979:16)
    at Module._compile (internal/modules/cjs/loader.js:1027:27)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
    at Module.load (internal/modules/cjs/loader.js:928:32)
    at Function.Module._load (internal/modules/cjs/loader.js:769:14)
    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:72:12)

This is my code:

let money = 500;

let bike = {
    cost: 300
    buyBike: (money) => {
        if (money >= this.cost) {
            money -= this.cost;
        } else {
            console.log("You don't have enough money to buy this bike.");
        }
    }
}

So, what is the right way to write an object method in JavaScript?

Answer 1

I've put together the working example so you can see it in code.

let money = 500;

let bike = {
    cost: 300,
    buyBike: function(money) {
        if (money >= this.cost) {
            money -= this.cost;
            console.log("Sold!");
        } else {
            console.log("You don't have enough money to buy this bike.");
        }
    }
}

bike.buyBike(money);