---
title: length
framework: TVMLKit JS
role: symbol
role_heading: Instance Property
platforms: [tvOS 13.0+, Safari Desktop 10.0+, Safari Mobile 10.0+]
path: tvmljs/htmlcollection/1629798-length
---

# length

## Declaration

```data
readonly attribute int length;
```

```data
readonly attribute unsigned long length;
```