36 lines
637 B
Markdown
36 lines
637 B
Markdown
---
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title: length() function
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description: The `length()` function returns the number of items in an array.
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menu:
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flux_0_x_ref:
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name: length
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parent: universe
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weight: 102
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aliases:
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- /influxdb/v2.0/reference/flux/stdlib/built-in/misc/length/
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- /influxdb/cloud/reference/flux/stdlib/built-in/misc/length/
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related:
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- /flux/v0.x/data-types/composite/array/
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introduced: 0.7.0
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---
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The `length()` function returns the number of items in an array.
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```js
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length(arr: [])
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```
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## Parameters
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### arr {data-type="array"}
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Array to evaluate.
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## Examples
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```js
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people = ["John", "Jane", "Abed"]
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length(arr: people)
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// Returns 3
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```
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