1# Custom Extension Capability Overview
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3The ArkUI framework offers a range of custom extension capabilities based on modifiers, allowing for the extension and modification of existing UI component attributes, gestures, and content in a way that is decoupled from the UI. This includes modifiers such as **AttributeModifier**, **GestureModifier**, and **DrawModifier**. [AttributeModifier](arkts-user-defined-extension-attributeModifier.md) and [AttributeUpdater](arkts-user-defined-extension-attributeUpdater.md), in particular, enable you to set attributes through custom classes, thereby expanding the ways in which attribute settings can be implemented and allowing them to be mixed with native attribute setting methods.
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5## AttributeModifier
6**AttributeModifier** allows dynamic attribute modification through **Modifier** objects, overcoming the limited use cases of the @Styles and @Extend decorators in declarative syntax. It surpasses @Styles and @Extend in capability and flexibility. In light of its superior adaptability and the ongoing development to cover all aspects of attribute and event settings, it is a recommended choice.
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8## AttributeUpdater
9As a special type of **AttributeModifier**, **AttributeUpdater** not only inherits the capabilities of **AttributeModifier** but also provides the capability to obtain the attribute object. By using the attribute object, you can update specific attributes without relying on state variables. With **AttributeUpdater**, you can implement custom update strategies, further improving the performance of attribute updates.
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