What is the best way to alter a specific value within an object without losing other important data?

I'm currently working on developing a function that will activate when the count either matches or is half the initial price required to open, and it should not reset to false even if the count drops back to 0.

Below is some sample data:

openData = {
    count: 0,
    chest: [
      { id: 'Chest1', price: 50, open: false },
      { id: 'Chest2', price: 200, open: false },
      { id: 'Chest3', price: 500, open: false }
    ]
  };

("changes `open` to `true` when the count meets or exceeds half of the initial price of the corresponding chest", function() {
  openData.count = 100;
  code.unlockedChest(openData.chest, openData.count);
  expect(openData.chest[0].open).to.equal(true);
  expect(openData.chest[1].open).to.equal(true);
  expect(openData.chest[2].open).to.equal(false);
});

('keeps `open` as `true` once a chest has been successfully opened, regardless of count dropping back to 0', function() {
  openData.count = 100;
  code.unlockedChest(openData.chest, openData.count);
  openData.count = 0;
  code.unlockedChest(openData.chest, openData.count);
  expect(openData.chest[0].open).to.equal(true);
  expect(openData.chest[1].open).to.equal(true);
  expect(openData.chest[2].open).to.equal(false);
});

});

Here is what I have come up with so far:

function unlockedChest (id, count) {
    if (count === chest.price || count <= chest.price) {
        return chest.open === true;
    } 
    if (chest.open === true) {
        return true; //trying to maintain the changed value
    }

}

I've spent several hours experimenting with this, but I believe my logic might be flawed, especially due to the interpretation of 'half'. The current output I am receiving expects false to be true for the first specification.

I am also considering the possibility of implementing a loop. Any additional advice on both specifications would be greatly appreciated!

Answer №1

It seems like you are looking to modify the value of chest.open depending on the value of chest.price, but only if the chest is currently closed (chest.open is false).

To achieve this, ensure that you check if the chest is already open before considering any other conditions. If chest.open == true, then there is no need to evaluate the price, especially within a function responsible for updating chest.open.

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