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title: addValueProvider()
collection: developer
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locale: en-us
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canonical_url: https://developer.salesforce.com/docs/platform/aura-platform/guide/ref-jsapi-component-addvalueprovider.html
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  - Lightning Aura Components Developer Guide
  - Platform Developer Content
---

# addValueProvider()

Adds custom value providers to a component.

## Signature

`addValueProvider(String key, Object valueProvider)`

## Parameters

**_key_:** Type: `String`. Key to identify the value provider. Used in expressions in markup.

**_valueProvider_:** Type: `Object`. The object to request data from. Must implement `get(expression)`, can implement `set(key,value)`.

**See Also**  


-   [Value Providers](https://developer.salesforce.com/docs/platform/aura-platform/expr/expr-source.md)