map array of objects react

stackoverflow.com › questions › 41027663 › how-to-map-an-array-of-objects-in-react

What you need is to map your array of objects and remember that every item will be an object, so that you will use for instance dot notation to take the values of the object.

In your component

 [
    {
        name: 'Sam',
        email: 'somewhere@gmail.com'
    },

    {
        name: 'Ash',
        email: 'something@gmail.com'
    }
].map((anObjectMapped, index) => {
    return (
        <p key={`${anObjectMapped.name}_{anObjectMapped.email}`}>
            {anObjectMapped.name} - {anObjectMapped.email}
        </p>
    );
})

And remember when you put an array of jsx it has a different meaning and you can not just put object in your render method as you can put an array.

Take a look at my answer at mapping an array to jsx

Answer from FurkanO on Stack Overflow

Stack Overflow

stackoverflow.com › questions › 41027663 › how-to-map-an-array-of-objects-in-react

How to map an array of objects in React - Stack Overflow

Top answer

1 of 6

54

What you need is to map your array of objects and remember that every item will be an object, so that you will use for instance dot notation to take the values of the object.

In your component

 [
    {
        name: 'Sam',
        email: 'somewhere@gmail.com'
    },

    {
        name: 'Ash',
        email: 'something@gmail.com'
    }
].map((anObjectMapped, index) => {
    return (
        <p key={`${anObjectMapped.name}_{anObjectMapped.email}`}>
            {anObjectMapped.name} - {anObjectMapped.email}
        </p>
    );
})

And remember when you put an array of jsx it has a different meaning and you can not just put object in your render method as you can put an array.

Take a look at my answer at mapping an array to jsx

2 of 6

12

@FurkanO has provided the right approach. Though to go for a more cleaner approach (es6 way) you can do something like this

[{
    name: 'Sam',
    email: 'somewhere@gmail.com'
 },
 {
    name: 'Ash',
    email: 'something@gmail.com'
 }
].map( ( {name, email} ) => {
    return <p key={email}>{name} - {email}</p>
})

Cheers!

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More results from stackoverflow.com

W3Schools

w3schools.com › react › react_es6_array_map.asp

React ES6 Array map()

Note: When using map() in React to create list items, each item needs a unique key prop. ... const users = [ { id: 1, name: 'John', age: 30 }, { id: 2, name: 'Jane', age: 25 }, { id: 3, name: 'Bob', age: 35 } ]; function UserList() { return ( <ul> {users.map(user => <li key={user.id}> {user.name} is {user.age} years old </li> )} </ul> ); } ... const fruitlist = ['apple', 'banana', 'cherry']; function App() { return ( <ul> {fruitlist.map((fruit, index, array) => { return ( <li key={fruit}> Name: {fruit}, Index: {index}, Array: {array} </li> ); })} </ul> ); }

Discussions

How to render an array of objects with Array.map in React

Array.map does not exist. The builtin Array does not have such a method. The only static methods which are defined are Array.from Array.isArrax and Array.of. What you are refering is on the instance of Arrays, and are accessable through the prototype-chain. The correct term would have been Array.prototype.map You've even linked to the mdn page were it is correctly defined, don't just remove things you don't understand - when you are trying to teach others. Don't forget to make proper research. More on reddit.com

r/reactjs

9

1

July 14, 2021

How to map over 2 Array of object in React and render to Table

From the context here, it sounds like what you'll need to do is that once you retrieve your two datasets, you'll want to combine them in to one that fits your needs, and then use this new result as the data for your table. I'd recommend looking into mapping the user cards to the corresponding user , so something maybe like: const combined = userDataSet.map((user) => { const userCard = userCardDataSet.find((card) => card.userId === user.id); return { ...user, userCard }; }); Made some assumptions of how your data looks, but hopefully this helps. More on reddit.com

r/reactjs

1

March 21, 2022

React - Use Array.map() to Dynamically Render Elements - .map is different than in js

{item} ) normally JavaScript wouldn’t spit anything out of that… an object surrounded by strings without quotation marks… The previous challenges stated that we use normal js in render method, before return statement. So can anybody explain to me what this line is ? More on forum.freecodecamp.org

forum.freecodecamp.org

8

0

January 25, 2023

Error when mapping to a component: Objects are not valid as a React Child, use mapping.

I'm guessing answer.text is not a string and an object instead? Looks like it should work if it's just a string

Top answer

1 of 1

6

Array.map does not exist. The builtin Array does not have such a method. The only static methods which are defined are Array.from Array.isArrax and Array.of. What you are refering is on the instance of Arrays, and are accessable through the prototype-chain. The correct term would have been Array.prototype.map You've even linked to the mdn page were it is correctly defined, don't just remove things you don't understand - when you are trying to teach others. Don't forget to make proper research.

Scrimba

scrimba.com › articles › react-list-array-with-map-function

How to use Array.map to render a list of items in React

November 1, 2022 - This example shows how you can take a load of data stored in an array of objects and use map to create an array of HTML. This is the foundation of using Array.map to create JSX code that can be used in React components.

freeCodeCamp

freecodecamp.org › news › destructure-object-properties-using-array-map-in-react

How to Destructure Object Properties Using array.map() in React

November 2, 2022 - Say you have a list of items in an array that needs to be rendered as a React component onto a web page. The ideal way to map a series of items in an array looks like this: const shoppingList = ['Oranges', 'Cassava', 'Garri', 'Ewa', 'Dodo', 'Books'] export default function List() { return ( <> {shoppingList.map((item, index) => { return ( <ol> <li key={index}>{item}</li> </ol> ) })} </> ) } The snippet above pretty much fulfills its purpose. But what if you have to map through an array of objects with multiple properties?

Find elsewhere

Google Bing Mojeek

Softwareshorts

softwareshorts.com › render-array-objects-array-map-react

How to render an array of objects with Array.map in React | SoftwareShorts

To render an array of data in React, we first need to map/convert the array of data into an array of components, which can be done with Array.prototype.map.

GeeksforGeeks

geeksforgeeks.org › reactjs › how-to-render-an-array-of-objects-in-reactjs

How To Render An Array Of Objects In ReactJS? - GeeksforGeeks

July 23, 2025 - The most common and recommended way to render an array of objects in React is by using the Array.map method to iterate through the array.

Codemzy

codemzy.com › blog › react-render-array-of-objects

How to render an array of objects in ReactJS - Codemzy's Blog

August 31, 2022 - I'm going to take a moment to explain how and why Array.map() works in ReactJS - because at first, it kinda just seemed like magic to me. But once you understand it, it just seems so much simpler. You can render an array in ReactJS without doing anything fancy - like this: ... But it won't work. You will get an error [object Error] because the array doesn't contain strings, numbers, or HTML elements that JSX (the language ReactJS uses to render to the DOM) understands.

GUVI

guvi.in › blog › programming languages › render array of objects in react: 3 methods with code (2026)

How to Render an Array of Objects in React? [in 3 easy steps]

July 18, 2026 - Here, .map() runs once for every object in products. Each object gets destructured into name and price for display, and product.id is passed as the key so React can track each <li> individually.

MakeUseOf

makeuseof.com › home › programming › how to map over a nested array in a react component

How to Map Over a Nested Array in a React Component

September 23, 2022 - For a flat array, the map function ... element; }); In React, you must wrap the map function with curly brackets and use an arrow function to return a node element for each iteration....

Hackingwithreact

hackingwithreact.com › read › 1 › 13 › rendering-an-array-of-data-with-map-and-jsx

Rendering an Array of Data with map() and JSX – a free Hacking with React tutorial

There's one more thing we're going to cover before you know enough React basics to be able to move on to a real project, and that's how to loop over an array to render its contents. Right now we have a single person with a single country, but wouldn't it be neat if we could have 10 people with 10 countries, and have them all rendered? Sure it would. Luckily for us, this is easy to do in JSX thanks to an array method called map().

Medium

medium.com › @bodhankargajanan99 › the-importance-of-keys-in-mapping-an-array-of-objects-in-react-94545eb9e5da

The Importance of Keys in Mapping an Array of Objects in React | by Gajanan Bodhankar | Medium

February 24, 2024 - Let’s examine a React component that overlays a variety of Names objects in more detail and discuss the significance of keys in this context. In the below example, I’ve used the index of map object as a key to the Names component which displays names and a checkbox next to it and it is passed as a prop by Main component. ... Here, in the Main component, if the array is shuffled by checking on one particular index for instance last index, then irrespective of the names, the last item of the array will show checked.

reddit.com › r/reactjs › how to map over 2 array of object in react and render to table

r/reactjs on Reddit: How to map over 2 Array of object in React and render to Table

March 21, 2022 -

how can i map over 2 Array of object in React and render to one Table

const [dataSetOne, setDataSetOne] = useState()
const [dataSettwo, setDataSetTwo] = useState()
``let URL1 = "http://api_url/users"
let URL2 = "http://api_url/users-card"
const promise1 = axios.post(URL1, inputValue , {headers: {'Content-Type': 'text/plain'}});
const promise2 = axios.post(URL2, inputValue , {headers: {'Content-Type': 'text/plain'}});
Promise.all([promise1, promise2]).then(function(values) {
  setDataSetOne(values[0]);
 setDataSetTwo(values[1]);
});

 <TableContainer>
      <Table>
        <TableHead>
          <TableRow>
            <TableCell>Dessert (100g serving)</TableCell>
            <TableCell align="right">Calories</TableCell>
            <TableCell align="right">Fat&nbsp;(g)</TableCell>
          </TableRow>
        </TableHead>
         <TableBody>

             <TableCell>{DataOne}</TableCell>
              <TableCell>{DataOne}</TableCell>
              <TableCell>{DataTwo}</TableCell>

       </TableBody>
      </Table>
    </TableContainer>