Lightning Components Developer Guide

What is the Lightning Component Framework?
Quick Start
Creating Components
Using Components
Communicating with Events
Creating Apps
Debugging
Fixing Performance Warnings
Reference
Reference Doc App
Supported aura:attribute Types
Basic Types
Function Type
Object Types
Standard and Custom Object Types
Collection Types
Custom Apex Class Types
Framework-Specific Types
aura:application
aura:component
aura:dependency
aura:event
aura:interface
aura:method
aura:set
Component Reference
Messaging Component Reference
Interface Reference
Event Reference
System Event Reference
Supported HTML Tags
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Function Type

An attribute can have a type corresponding to a JavaScript function.
1<aura:attribute name="callback" type="Function" />

For an example, see Return Result for Asynchronous Code.

Don’t send attributes with type="Function" to the server. These attributes are intended to only be used on the client side.

Note