Lightning Components Developer's Guide

Introducing the Lightning Component Framework
Quick Start
Creating Components
Working with UI Components
Using Expressions
Supporting Accessibility
Communicating with Events
Creating Apps
App Overview
Designing App UI
Creating App Templates
Content Security Policy Overview
Styling Apps
Using JavaScript
JavaScript Cookbook
Invoking Actions on Component Initialization
Detecting Data Changes
Finding Components by ID
Dynamically Creating Components
Dynamically Adding Event Handlers
Dynamically Showing or Hiding Markup
Adding and Removing Styles
Which Button Was Pressed?
Using Apex
Using Object-Oriented Development
Using the AppCache
Controlling Access
Distributing Applications and Components
Debugging
Reference
PDF

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Which Button Was Pressed?

To find out which button was pressed in a component containing multiple buttons, use Component.getLocalId().

Let’s look at a component that contains multiple buttons. Each button has a unique local ID, set by an aura:id attribute.

Use event.getSource() in the client-side controller to get the button component that was clicked. Call getLocalId() to get the aura:id of the clicked button.