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JavaScript: Why does my array of objects return undefined when accessing properties after a filter operation?

๐Ÿ‘€ Views: 14 ๐Ÿ’ฌ Answers: 1 ๐Ÿ“… Created: 2025-06-11
javascript arrays filter JavaScript

I'm reviewing some code and I tried several approaches but none seem to work..... I'm working with an array of objects in JavaScript and using the `filter` method to create a new array based on a certain condition. However, after filtering, when I try to access properties of the resulting array, I keep getting `undefined`. Hereโ€™s what I have: ```javascript const data = [ { id: 1, name: 'Alice', age: 25 }, { id: 2, name: 'Bob', age: 30 }, { id: 3, name: 'Charlie', age: 35 } ]; const filteredData = data.filter(person => person.age > 30); console.log(filteredData); console.log(filteredData[0].name); // This returns undefined ``` I expected `filteredData[0].name` to return 'Charlie', but it's giving me `undefined`. Iโ€™ve confirmed that the filtering works correctly since `console.log(filteredData)` outputs the correct array containing only the object with `id: 3`. Iโ€™ve also checked that `filteredData.length` gives me `1`, confirming that there is an object in the filtered array. What could be causing this scenario? Is there something Iโ€™m missing with how I'm accessing the filtered array's properties or maybe with the `filter` method itself? I'm using Node.js version 14.17.0 for this code. Any help would be greatly appreciated. This is part of a larger application I'm building. Any suggestions would be helpful.