find(...).map is not a function

Samy Sabi answered on August 30, 2022 Popularity 10/10 Helpfulness 2/10

answer find(...).map is not a function

related TypeError: map is not a function

find(...).map is not a function

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/** If you're using async await then you should do this instead.
/*  Say, we have a User Model in which every user has an array of posts
/*  and we want to find every user and map over it: */

const posts = (await User.find()).map(user => user.posts)

// Notice: You have to wrap await User.find in parentheses

Popularity 10/10 Helpfulness 2/10 Language javascript

Source: Grepper

Tags: function javascript

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Contributed on Nov 27 2022

Samy Sabi

0 Answers Avg Quality 2/10

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TypeError: map is not a function

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The "TypeError: map is not a function" occurs when we call the map() method on a value that is not an array. To solve the error, console.log the value you're calling the map() method on and make sure to only call map on valid arrays.



Here is an example of how the error occurs.

App.js

const App = () => {
  const obj = {};

  // ⛔️ Uncaught TypeError: map is not a function

  return (
    <div>
      {obj.map(element => {
        return <h2>{element}</h2>;
      })}
    </div>
  );
};

export default App;

Popularity 10/10 Helpfulness 2/10 Language javascript

Source: bobbyhadz.com

Tags: function functio

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Contributed on Aug 30 2022

Embarrassed Elephant

0 Answers Avg Quality 2/10

TypeError: map is not a function

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-1

To solve the error, console.log the value you're calling the map method on and make sure it's a valid array.

App.js

export default function App() {
  const arr = ['one', 'two', 'three'];

  return (
    <div>
      {arr.map((element, index) => {
        return (
          <div key={index}>
            <h2>{element}</h2>
          </div>
        );
      })}
    </div>
  );
}

Popularity 10/10 Helpfulness 2/10 Language javascript

Source: bobbyhadz.com

Tags: function functio

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Contributed on Aug 30 2022

Embarrassed Elephant

0 Answers Avg Quality 2/10

find(...).map is not a function

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