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React Native - Sorting an Array of Objects with Nested Date Strings - Getting Incorrect Order

👀 Views: 17 đŸ’Ŧ Answers: 1 📅 Created: 2025-06-04
react-native javascript sorting JavaScript

After trying multiple solutions online, I still can't figure this out. I'm currently working on a React Native project where I need to sort an array of objects based on a nested date string property. Each object has a structure like this: ```javascript const data = [ { id: 1, name: 'Item A', details: { createdAt: '2022-09-15T10:30:00Z' } }, { id: 2, name: 'Item B', details: { createdAt: '2021-05-22T08:15:00Z' } }, { id: 3, name: 'Item C', details: { createdAt: '2023-01-01T12:00:00Z' } } ]; ``` I want to sort this array in ascending order based on the `createdAt` dates. I tried implementing a sort function using JavaScript's native `sort` method like this: ```javascript const sortedData = data.sort((a, b) => { return new Date(a.details.createdAt) - new Date(b.details.createdAt); }); ``` However, the resulting order seems incorrect; it appears that the dates are not sorted properly. Here's the output I received after sorting: ```javascript [ { id: 3, name: 'Item C', details: { createdAt: '2023-01-01T12:00:00Z' } }, { id: 1, name: 'Item A', details: { createdAt: '2022-09-15T10:30:00Z' } }, { id: 2, name: 'Item B', details: { createdAt: '2021-05-22T08:15:00Z' } } ] ``` It seems like the dates are not being compared correctly, and I suspect it might have to do with the way I'm creating the Date objects. I've also checked that the date strings are properly formatted ISO 8601 strings. Is there a better way to sort this array of objects by the nested date strings? Any insights on why my sort function isn't working as expected would be greatly appreciated. I'm using React Native version 0.65.1. My development environment is Linux. Thanks in advance! Could this be a known issue?