> For the complete documentation index, see [llms.txt](https://lupemaydana.gitbook.io/learn-mongodb/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://lupemaydana.gitbook.io/learn-mongodb/deeper-dive-on-the-mongodb-query-language/element-operators.md).

# Element Operators

Handle situations where:

* Detect the presence or absence of a field.
* Different value types in the same field.

## 📌 $exists

List documents that have a specific field. The value for this operator can be **true** or **false**.

```
db.movieDetails.find({“mpaaRating”: {$exist: true}})
```

If you use a filter to check the **null** value, to list documents that either have that field set to **null** or do not have that field.

## 📌 $type

List documents that have a field with a specific type of value.

```
db.movieDetails.find({“viewerRating”: {$type: “int”}})
```