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    To iterate over an object in JavaScript, you can use various methods depending on your requirements. Below are some common approaches with examples.

    Using for...in Loop

    The for...in loop iterates over all enumerable properties of an object, including inherited ones. Use hasOwnProperty() to filter out inherited properties.

    const obj = { name: "Alice", age: 25, city: "New York" };

    for (let key in obj) {
    if (obj.hasOwnProperty(key)) {
    console.log(`${key}: ${obj[key]}`);
    }
    }
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    Using Object.keys() and forEach()

    Object.keys() returns an array of the object's keys, which can be iterated using forEach().

    const obj = { name: "Alice", age: 25, city: "New York" };

    Object.keys(obj).forEach(key => {
    console.log(`${key}: ${obj[key]}`);
    });
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    Using Object.entries() and Destructuring

    Object.entries() returns an array of [key, value] pairs. You can destructure these pairs for easier access.

    const obj = { name: "Alice", age: 25, city: "New York" };

    for (const [key, value] of Object.entries(obj)) {
    console.log(`${key}: ${value}`);
    }
    Copied!
    What is iteration in Java?
    Iteration involves looping through the object's properties one by one. Depending on the method used, you can access and manipulate different levels of properties efficiently. Here are several methods. A for..in loop iterates over all enumerable properties of an object, including inherited ones.
    geeksforgeeks.org
    Stack Overflow
    https://stackoverflow.com/questions/14379274
    How to iterate over a JavaScript object? - Stack Overflow
  1. GeeksForGeeks
    https://www.geeksforgeeks.org › javascript › how-to...

    Iterate over a JavaScript object - GeeksforGeeks

    Oct 14, 2025 · Iteration involves looping through the object's properties one by one. Depending on the method used, you can access and manipulate different levels of properties efficiently.

    • Iteration involves looping through the object's properties one by one. Depending on the method used, you can access and manipulate different levels of properti…

    See results only from geeksforgeeks.org
  2. Stack Overflow
    https://stackoverflow.com › questions

    How to iterate over a JavaScript object? - Stack Overflow

    Jan 17, 2013 · To achieve this we can use the built in Object.keys() function to retrieve all the keys of an object in an array. We then can split up the iteration into multiple for loops and access the properties …

    • Reviews: 4
      Usage example
      let keys = Object.keys(yourobject);
    • Mozilla Developer
      https://developer.mozilla.org › ... › Object › entries

      Object.entries () - JavaScript | MDN

      • Object.entries() returns an array whose elements are arrays corresponding to the enumerable string-ke…
        If you only need the property keys, use Object.keys() instead. If you only need the property values, use Object.values() instead.
      See more on developer.mozilla.org
    • FreeCodecamp
      https://www.freecodecamp.org › news › how-to-iterate...

      Loop Through an Object in JavaScript – How to Iterate …

      Jul 20, 2022 · In this article, You'll learn how you can loop through an object in JavaScript. There are two methods you can use - and one of them pre-dates the …

    • W3School
      https://www.w3schools.com › js › js_iterators.asp

      JavaScript Iterators - W3Schools

      The methods provide a more functional and efficient way to work with iterable objects, including generators, by allowing direct manipulation and transformation without first converting them to arrays:

    • index.dev
      https://www.index.dev › blog › javascript-object...

      10 Effective Methods to Iterate Over JavaScript Objects

      Nov 20, 2024 · Learn 10 different methods to iterate over JavaScript objects. This guide covers each technique’s pros, cons, and use cases, helping you choose the …

    • latenode.com
      https://latenode.com › blog › development-programming › ...

      How to Iterate Over a JavaScript Object? - Latenode Blog

      Feb 12, 2026 · In this article, we'll explore different methods to iterate over a JavaScript object efficiently, along with their syntax, examples, and use cases. …

    • JavaScript Tutorial
      https://www.javascripttutorial.net › object › iterate-object-in-javascript

      Iterate Object in JavaScript

      In this tutorial, you will learn various ways to iterate an object in JavaScript.

    • Mozilla Developer
      https://developer.mozilla.org › en-US › docs › Web › ...

      Loops and iteration - JavaScript | MDN - MDN Web Docs

      Nov 3, 2025 · Loops offer a quick and easy way to do something repeatedly. This chapter of the JavaScript Guide introduces the different iteration statements available to JavaScript.

    • W3School
      https://www.w3schools.com › js › js_iterables.asp

      JavaScript Iterables - W3Schools

      JavaScript Iterators The iterator protocol defines how to produce a sequence of values from an object. An object becomes an iterator when it implements a next() method. The next() method must return an …

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