How do you get attribute value in lightning component?

<aura:attribute>tag is used to add an attribute to the lightning component and Salesforce lightning App.

1. Each attribute must have “name” and “type“.
2. To make attribute as required use required=”true” in the tag.
3. To make default value use default=”string or integer“.

.

In respect to this, how do you get attribute value in lightning controller?

Get an Attribute Value get(String key) and component. set(String key, Object value) retrieves and assigns values associated with the specified key on the component. Keys are passed in as an expression, which represents an attribute value. To retrieve an attribute value of a component reference, use component.

Also Know, how do you find the component of lightning? You can find the component by calling cmp. find("button1") , where cmp is a reference to the component containing the button. The find() function has one parameter, which is the local ID of a component within the markup. find() returns different types depending on the result.

In this manner, what is attribute in lightning component?

Component Attributes. Component attributes are like member variables on a class in Apex. They are typed fields that are set on a specific instance of a component, and can be referenced from within the component's markup using an expression syntax. Attributes enable you to make components more dynamic.

What is attribute tag in Salesforce?

Custom Component Attributes. An <apex:attribute> tag requires values for the name , description , and type attributes: The name attribute defines how the custom attribute can be referenced in Visualforce pages.

Related Question Answers

What is lightning aura?

Aura is an open-source UI framework built by Salesforce for developing dynamic web apps for mobile and desktop devices.To build lightning components in salesforce lightning we use the Lightning component framework.

What is the difference between PageBlockTable and Datatable in VF pages?

Both components used to render data in tabular format. Datatable used to display data in simple HTML table format where as PageBlockTable uses look and feel of Standard Salesforce CSS and must be written under apex:PageBlock component. 2) There is no required value.

What is the use of Aura attribute?

An aura attribute is like a variable that we use in programming language or in Apex class. These are typed fields and set on a specific instance of a component. These attributes can be used inside the component as expressions and in controller and helper as well.

How do you get aura attributes required?

<aura:attribute>tag is used to add an attribute to the lightning component and Salesforce lightning App.

1. Each attribute must have “name” and “type“.
2. To make attribute as required use required=”true” in the tag.
3. To make default value use default=”string or integer“.

What is Aura handler in Salesforce lightning?

hi Salesforce#### in lightning component <aura:handler > is used for handle standard and custom events. we can create our custom lightning event and also use standard events, standard lightning event is automatically fired when related event is fire.

What is the use of the Aura method tag in lightning?

aura method in lightning salesforce. Use aura:method to define a method as part of a component's API. This enables you to directly call a method in a component's client-side controller instead of firing and handling a component event.

What is an aura component?

Components are the functional units of Aura, which encapsulate modular and reusable sections of UI. They can contain other components or HTML markup. The public parts of a component are its attributes and events. Aura provides out-of-the-box components in the aura and ui namespaces.

What is lightning data?

Lightning Data is a native way to integrate 3rd party datasets like HG directly into Salesforce CRM. This allows for incredibly easy, reliable, and safe integrations that can bring much needed insights into Salesforce without the need for complex integration code, or API calls.

What is a Salesforce component?

Visualforce Components. Visualforce components are small, reusable pieces of functionality—think widgets, panels, user interface elements, that kind of thing—that you use in Visualforce page markup. You can use standard Visualforce components, and create your own custom components.

What is a enqueueAction?

enqueueAction(action) adds the server-side controller action to the queue of actions to be executed. All actions that are enqueued will run at the end of the event loop.

What is V and C in lightning?

As you have rightly guessed, v refers to view and c refers to controller. Lightning Component Developer's Guide (lightning.meta/lightning/) does mention that somewhere.

How do you get an aura ID in lightning?

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.

Can aura Id be dynamic?

No, it's not possible to dynamically set aura:id based on aura:attribute for any component, it should always point to literal/hardcoded string value. You can only assign literal string values to aura:id.

What is a benefit of using a trigger framework?

Here are some of the advantages of using a trigger framework: Removing trigger logic from the trigger makes unit testing and maintenance much easier. Standardising triggers means all of your triggers work in a consistent way. A single trigger per object gives full control over order of execution.

What is Apex attribute?

apex:attribute. A definition of an attribute on a custom component. The attribute tag can only be a child of a component tag. Note that you cannot define attributes with names like id or rendered. These attributes are automatically created for all custom component definitions.

What is Apex component?

apex:component. A custom Visualforce component. All custom component definitions must be wrapped inside a single <apex:component> tag. This component supports HTML pass-through attributes using the "html-" prefix.

What is Visualforce and Apex?

Visualforce is a framework used for custom User Interface features. Apex is custom code that can be evaluated in many different places including: When a record is saved (trigger) As a bound action for a Visualforce page (custom or standard controller)

What is Apex page?

apex:page. A single Visualforce page. All pages must be wrapped inside a single page component tag. This component supports HTML pass-through attributes using the "html-" prefix. Pass-through attributes are attached to the generated <html> tag.

What is action attribute in Visualforce page in Salesforce?

Salesforce provides a way to define logic before rendering a visualforce page by providing a special attribute called as 'action'. It is used to define Page-Load actions. This attribute is available for other visualforce tags but here we will be discussing action attribute in 'apex: page' tag.