What is a component attribute?
Definition. A Component Attribute is an attribute of a component that has a value of type Artifact Group. An attribute can be declared in a CSPEC by using one of the elements artifact, group, or action.
What is 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 an apex component?
A custom Visualforce component. All custom component definitions must be wrapped inside a single tag. This component supports HTML pass-through attributes using the “html-” prefix.
What are the two required attribute for a component attribute?
Must begin with a letter or an underscore. Must contain only alphanumeric or underscore characters.
What data types can be used for component attributes?
The component supports different types of attributes basic types like Boolean, Integer, String, Number etc and Object type and Complex types like functions and Facets.
What data types can be used for component attributes in salesforce?
Supported data types in an Apex class are Boolean, Integer, Long, Decimal, Double, Date, DateTime, and String.
Why Apex form is used?
Apex Form Component is used to create Forms in Visualforce page. Apex input and output components are added inside Component. It is required to add only one tag instead of adding many form tags. The body of the form determines the data that is displayed and the way it is processed.
What is a Visualforce component?
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 use of Apex component in pages?
A single Visualforce page. All pages must be wrapped inside a single page component tag. Use this component to get user input for a controller method that does not correspond to a field on an sObject.
What is difference between Visualforce Components and lightning components?
Visualforce assists in the creation of personalized user interfaces with native hosting as a platform that includes tag-based markup language and server-side controllers. Lightning is a cutting-edge user interface framework that helps developers create immersive web applications for both mobile and desktop devices.
What are attributes in lightning component?
Lightning Component Attribute (aura:attribute) are like member variables on a class in Apex. tag is used to add an attribute to the lightning component and Salesforce lightning App. Each attribute must have “name” and “type“. To make attribute as required use required=”true” in the tag.
What data types can be used for component attributes in Salesforce?
How do you assign a value to an attribute in Aura component?
Aura:set can be used to set the value of an attribute on the component reference. In case of , it can be used to set the value of attribute on . Here, for example, we will use aura:set to set the value ‘buttonTitle’ attribute of ui:button. Below Is a Snippet of code of Lightning Component.
What’s the purpose of attributes in Salesforce?
Attribute : It is used to store information to be referenced in our lightning component code. Attributes on components are like instance variables in objects. It have a name and a type. tag is used to add an attribute to the component.
What is APEX form in Salesforce?
apex:form, it is a section of visualforce page that allows users to enter input and then submit it with command button or link. It is a best practice to use only one apex:form tag in a page or custom component.
What is a component in Salesforce?
How do you set attributes in lightning component?
Use the tag to add an attribute to the component or app. All attributes have a name and a type. Attributes may be marked as required by specifying required=”true”, and may also specify a default value.
What is an attribute in Aura component?
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 attribute value in lightning component?
To retrieve an attribute value of a component reference, use component. find(“cmpId”). get(“v. value”) .
What is the use of attribute in lightning component?
What are component attributes in Salesforce apex?
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 are component attributes?
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.
How do I add attributes to a component or app?
Attributes enable you to make components more dynamic. Use the tag to add an attribute to the component or app. Let’s look at the following sample, helloAttributes.app:
What does’string required’mean in apex?
type=”String” required =”true”/> Required? Indicates whether the attribute can be used outside of any page in the same namespace as the attribute. Possible values are “public” (default) and “global”.