Lightning Aura Components Developer Guide

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Introducing Aura Components
Quick Start
Creating Components
Component Names
Create Aura Components in the Developer Console
Create Aura Components Using Salesforce CLI
Component Markup
Component Namespace
Component Bundles
Component IDs
HTML in Components
CSS in Components
Component Attributes
Using Expressions
Component Composition
Component Body
Component Facets
Controlling Access
Using Object-Oriented Development
Best Practices for Conditional Markup
Aura Component Versioning for Managed Packages
Base Components with Minimum API Version Requirements
Validations for Aura Component Code
Using Labels
Localization
Working with Lightning Base Components
Lightning Base Components Considerations
Event Handling in Lightning Base Components
Creating a Form
Validating Fields
Lightning Design System Considerations
Migrate Components from the ui Namespace
Supporting Accessibility
Writing Documentation for the Component Library
Using Components
Communicating with Events
Communicating Across the DOM with Lightning Message Service
Creating Apps
Styling Apps
Developing Secure Code
Using JavaScript
Working with Salesforce Data
Testing Components
Debugging
Performance
Reference
PDF

Migrate Components from the ui Namespace

If you’re using components in the ui namespace, replace them with their lightning namespace counterparts.

Components in the ui namespace are deprecated as of API version 47.0, the Winter ’20 release. We recommend that you use components in the lightning namespace instead or use the Lightning web component equivalent. You can continue to use the ui components beyond Summer ’21 but Salesforce plans to cease support for them in Summer ’21. For more information, see Working with Lightning Base Components.

Note

For migration recommendations for each ui component, refer to the Component Library. For example, the ui:button specification notes that you can use lightning:button, lightning:buttonIcon, or lightning:buttonIconStateful instead, depending on your use case. To view examples and usage guidelines for lightning namespace components, refer to the Component Library.

The following tables list ui components and their recommended counterparts in the lightning namespace.

Complex, Interactive Components

The following components contain one or more subcomponents and are interactive.

Type ui Component (Deprecated) Description lightning Component
Message ui:message A message notification of varying severity levels lightning:notificationsLibrary
Menu ui:menu A dropdown list with a trigger that controls its visibility lightning:buttonMenu
ui:menuList A list of menu items
ui:actionMenuItem A menu item that triggers an action lightning:menuItem
ui:checkboxMenuItem A menu item that supports multiple selection and can be used to trigger an action
ui:radioMenuItem A menu item that supports single selection and can be used to trigger an action
ui:menuItemSeparator A visual separator for menu items lightning:menuDivider
ui:menuItem An abstract and extensible component for menu items in a ui:menuList component lightning:menuItem
ui:menuTrigger A trigger that expands and collapses a menu lightning:buttonMenu
ui:menuTriggerLink A link that triggers a dropdown menu. This component extends ui:menuTrigger

Input Control Components

The following components are interactive, for example, like buttons and checkboxes.

Type Key Components (Deprecated) Description lightning Component
Button ui:button An actionable button that can be pressed or clicked lightning:button, lightning:buttonIcon, or lightning:buttonIconStateful
Checkbox ui:inputCheckbox A selectable option that supports multiple selections lightning:input with checkbox, toggle, or checkbox-button type
ui:outputCheckbox Displays a read-only value of the checkbox lightning:input with checkbox type and readonly attribute
Radio button ui:inputRadio A selectable option that supports only a single selection lightning:input with radio type or lightning:radioGroup
Dropdown List ui:inputSelect A dropdown list with options lightning:combobox
ui:inputSelectOption An option in a ui:inputSelect component

Visual Components

The following components provide informative cues, for example, like error messages and loading spinners.

Type Key Components (Deprecated) Description lightning Component
Field-level error ui:inputDefaultError An error message that is displayed when an error occurs lightning:input with field validation
Spinner ui:spinner A loading spinner lightning:spinner

Field Components

The following components enable you to enter or display values.

Type Key Components (Deprecated) Description lightning Component
Currency ui:inputCurrency An input field for entering currency lightning:input with number type and currency formatter
ui:outputCurrency Displays currency in a default or specified format lightning:formattedNumber with currency style
Email ui:inputEmail An input field for entering an email address lightning:input with email type
ui:outputEmail Displays a clickable email address lightning:formattedEmail
Date and time ui:inputDate An input field for entering a date lightning:input with date type
ui:inputDateTime An input field for entering a date and time lightning:input with datetime type
ui:outputDate Displays a date in the default or specified format lightning:formattedDateTime
ui:outputDateTime Displays a date and time in the default or specified format lightning:formattedDateTime or lightning:formattedTime
Password ui:inputSecret An input field for entering secret text lightning:input with password type
Phone Number ui:inputPhone An input field for entering a phone number lightning:input with phone type
ui:outputPhone Displays a phone number lightning:formattedPhone
Number ui:inputNumber An input field for entering a numerical value lightning:input with number type
ui:outputNumber Displays a number lightning:formattedNumber
Range ui:inputRange An input field for entering a value within a range lightning:slider
Rich Text ui:inputRichText An input field for entering rich text lightning:inputRichText
ui:outputRichText Displays rich text lightning:formattedRichText
Text ui:inputText An input field for entering a single line of text lightning:input
ui:outputText Displays text lightning:formattedText
Text Area ui:inputTextArea An input field for entering multiple lines of text lightning:textarea
ui:outputTextArea Displays a read-only text area lightning:formattedText
URL ui:inputURL An input field for entering a URL lightning:input with url type
ui:outputURL Displays a clickable URL lightning:formattedUrl