# \$1anyElementTrue
<a name="anyElementTrue"></a>

New from version 4.0

The `$anyElementTrue` operator is used to determine if any element in an array is true.

**Parameters**
+ `field`: An array field to evaluate.

## Example (MongoDB Shell)
<a name="anyElementTrue-examples"></a>

The following example demonstrates the usage of `$anyElementTrue` to check if any element in an array is true.

**Create sample documents**

```
db.grades.insertMany([
  { _id: 1, student: 'Tim', scores: [false, false, null] },
  { _id: 2, student: 'Bob', scores: [false, 0, false] },
  { _id: 3, student: 'Ivy', scores: [false, true, 0] }
])
```

**Query example**

```
db.grades.aggregate([
  {
    $project: {
      student: 1,
      isAnyTrue: { $anyElementTrue: ["$scores"] },
      _id: 0
    }
  }
])
```

**Output**

```
[
  { student: 'Tim', isAnyTrue: false },
  { student: 'Bob', isAnyTrue: false },
  { student: 'Ivy', isAnyTrue: true }
]
```

## Code examples
<a name="anyElementTrue-code"></a>

To view a code example for using the `$anyElementTrue` command, choose the tab for the language that you want to use:

------
#### [ Node.js ]

```
const { MongoClient } = require('mongodb');

async function example() {
  const client = await MongoClient.connect('mongodb://<username>:<password>@<cluster-endpoint>:27017/?tls=true&tlsCAFile=global-bundle.pem&replicaSet=rs0&readPreference=secondaryPreferred&retryWrites=false');
  const db = client.db('test');
  const collection = db.collection('grades');

  const result = await collection.aggregate([
    {
      $project: {
        student: 1,
        isAnyTrue: { $anyElementTrue: ["$scores"] },
        _id: 0
      }
    }
  ]).toArray();

  console.log(result);

  await client.close();
}

example();
```

------
#### [ Python ]

```
from pymongo import MongoClient

def example():
    client = MongoClient('mongodb://<username>:<password>@<cluster-endpoint>:27017/?tls=true&tlsCAFile=global-bundle.pem&replicaSet=rs0&readPreference=secondaryPreferred&retryWrites=false')
    db = client['test']
    collection = db['grades']

    result = list(collection.aggregate([
      {
        "$project": {
          "student": 1,
          "isAnyTrue": { "$anyElementTrue": ["$scores"] },
          "_id": 0
        }
      }
    ]))

    print(result)

    client.close()

example()
```

------