You will require to use Lightning: recordForm, Lightning: recordEditForm, Lightning: recordViewForm, force: recordData.
Posted Date:- 2021-10-27 05:11:28
We use the aura: a method for defining the method within the API of the component. This allows us to call a method directly in the client-side controller of a component rather than handling or dismissing an event. Through <aura: method>, we can simplify the code which the parent component requires for calling a method on the child component.
Posted Date:- 2021-10-27 05:10:21
The AuraEnabled annotation allows the lightning components for accessing the Apex properties and methods. AuraEnabled annotation is overloaded, and we use it for distinct purposes.
1. We use AuraEnabled on the Apex class static methods for making them accessible like remote controller actions in our lightning components.
2. We use @AuraEnabled on the Apex Instance methods and properties for making them serializable when we return the class instance like the data from the server-side action.
Posted Date:- 2021-10-27 05:09:41
The major differentiation lies in the fact that Lightning components are built based on the component framework, they are well-adapted to mobile, and are centered around the client. On the other hand, Visualforce components revolve around the page itself with the server being the place where the majority of work takes place.
Posted Date:- 2021-10-27 05:08:20
In general, it is considered good practice to give preference to Component Events over Application Events. Application Events are used for signaling a message to a broader audience, whereas Component Events are tied to a hierarchy and can limit receiving the message to only those components that should be notified about it.
Posted Date:- 2021-10-27 05:07:29
Yes, multiple libraries can be used such as JavaScript/CSS libraries, jQuery, Bootstrap, etc from a local, static resource.
Posted Date:- 2021-10-27 05:06:46
Three phases are available for application event propagation when the event fires: capture phase, bubble phase, and default phase.
Posted Date:- 2021-10-27 05:06:09
Two phases are available for component event propagation after the event fires: capture phase and bubble phase.
Posted Date:- 2021-10-27 05:05:35
Aura components can’t be included in a Lightning Web component because it isn’t possible to add generic elements to custom components (in other words, a parent Lightning Web component can only be made up of Lightning Web components). Nevertheless, by contrast, you may include Lightning Web components into Aura components (i.e. parent Aura components can contain both Aura Components and LWC). Moreover, they can handle each other’s events.
Posted Date:- 2021-10-27 05:05:02
With a responsive design in mind, Lightning components are meant to be mobile-first. The components help to build responsive apps faster for desktops, tablets, and mobile.
Posted Date:- 2021-10-27 05:04:23
We use the component event for interaction between the parent and child. We can communicate the change in the child component to the parent component through the component event. We use Application events to send any modification in the component to a wide audience. The components registered for this event will get an alert.
Posted Date:- 2021-10-27 05:03:49
As with all Apex to be used within any Lightning component, the methods must first be set to be “Aura Enabledâ€, using the Apex annotation “@AuraEnabledâ€, exposing the method to the Lightning components. Furthermore, the annotation must be expanded to state that it is cacheable like “@AuraEnabled(cacheable=true)â€. This annotation disables all DML operations, meaning the method only returns data, never mutates it. The method can then be imported into the LWC, like any other, and used as a wire adapter.
Posted Date:- 2021-10-27 05:02:55
The wire service is a data provisioning service which streams new data as it becomes available. It supports reactive variables, allowing new data to be provisioned as the context changes. The source of the data can either be from a Salesforce module, or a developer defined Apex class.
Posted Date:- 2021-10-27 05:02:11
By using Lightning App Builder, we can create lightning record pages. Following are different types of lightning record pages:
1. Record page
2. App page
3. Home page
Posted Date:- 2021-10-27 05:00:05
By using Lightning out, we can embed the lightning component on the VisualForce page. We can add the lightning component to the VisualForce page in three steps:
1. First, we must insert the lightning components for the javascript library of visual force to our intent visual force page through the tag.
2. After that, we can generate and point a lightning app that we use for the component dependencies.
3. Finally, we have to write a javascript function that creates the component over the page through $Lightning.createComponent().
Posted Date:- 2021-10-27 04:58:58
Attributes are variables that we use for storing the values. We must define the Default, Type, Name, Access, and Description in the attribute definition. In the attribute definition, only Name and Type are the required parameters.
Posted Date:- 2021-10-27 04:58:03
If we want to use our component on the external site, we have to use lightning out. The advantage of lightning out is we can utilize lightning components in a visual force page.
Posted Date:- 2021-10-27 04:56:45
When the style classes provided by SLDS don’t meet our requirements, we are still able to provide our own styles to achieve what we need in both Aura and LWC. The process is pretty similar in both frameworks: we create a CSS file which matches the name of the component in its folder and place our styles there. In LWC, the styles of our components are completely encapsulated and don’t overflow into other components. In Aura we prefix all our styles with ‘.THIS’, but our styles can affect child components.
Posted Date:- 2021-10-27 04:53:58
In situations where an event can be frequently fired based on a user interaction, it’s important we handle those events in a specific way so as to not cause a detrimental impact to the user’s experience. A good example for this is a search bar which filters a list when a user types into it, if we were handling the ‘onchange’ event, we would end up filtering after every keypress and this would cause the search to appear sluggish to the user. Instead what we want to do is set a timeout after every keypress, if the user continues to type within a small time frame (say 500ms), we simply cancel the previous timeout and start a new one. Now we only take the performance hit when we know the user has done something valid and the filtering appears smooth. This technique is called debouncing.
Posted Date:- 2021-10-27 04:53:02
Some of them are:
* Default phase
* Bubble phase
* Capture Phase
Posted Date:- 2021-10-27 04:50:07
Some of them are:
* Default phase
* Bubble phase
* Capture Phase
Posted Date:- 2021-10-27 04:50:00
Lightning components can be used in frequent places, including the Lightning App Builder and Community designer, in divide separate applications, as well as in Lightning Experience Record Pages, Lightning Pages etc. The advantage they could also be displayed in the direction-finding bar, in the App Launcher, and as a Quick act.
Posted Date:- 2021-10-27 04:48:08
Lightning component is lightning experience ready by default and is also compatible in Salesforce1 App, it has a responsive layout therefore it adjust its resolution according the screen size and therefore can be used on desktop as well without writing any separate code.
Posted Date:- 2021-10-27 04:46:28
It is always a good idea to use a component event over an application event. Component events can be handled only by the components which are above them in the hierarchy of containment. Thus, the usage is limited to the components which need to know them.
Application events are best used when something is handled at the application level, like navigating to a particular record. Application events permit any communication between the components which are in separate parts of the application and have no direct containment relationship.
Posted Date:- 2021-10-27 04:45:39
Component Events: these are used when the parent and child need to communicate. They make use of bubbling and capture, just like it is used in DOM events. A change in a child component will be communicated to the parent component through the component event.
Application Events: these are basically used for communicating any kind of change in the component to a larger audience. Any component which has been registered for this event will get notified.
Posted Date:- 2021-10-27 04:44:52
Aura is an open-source framework which is one of the ways to create Lightning components that are reusable units. This original programming model is thought to be the “basics†for building components. The other more modern method, Lightning Web Component, is very different from it. The process of migrating Aura components to Lightning Web components isn’t linear, therefore it makes sense to apply Lightning Web for making new components and sticking with the Aura components for older ones that you already have in Aura.
Posted Date:- 2021-10-27 04:44:26
Lightning components can be created in two possible ways: either with the Lightning Web Components model (which uses JavaScript and custom HTML) or the Aura Components programming model (that are basic pre-built and reusable units). Importantly, both the component types can be applicable side-by-side on a single page or app.
Posted Date:- 2021-10-27 04:43:43
It isn’t right to call Salesforce Lightning a model-view-controller framework as it is component-based.
Posted Date:- 2021-10-27 04:43:14
The Aura: method tag can be used for defining a method for component API. So, there is no need to fire and handle a component event, and it allows us to directly invoke the method in the component’s controller on the client-side. It also helps to simplify the code required for a parent component to call a method on a child component that forms a part of the parent component.
Posted Date:- 2021-10-27 04:42:52
Of course, we can do this. The styles can be inherited from parents and not necessarily defined in the component.
Posted Date:- 2021-10-27 04:42:27
Following are the component bundles of the lightning components:
Controller: Controller tackles the client-side events.
Style: It includes component style.
Documentation: We use this component bundle for recording the component’s use.
Renderer: The renderer component bundle contains a component default rendering behavior.
Helper: we can write the general logic in the helper that is used by various controller methods to avoid repetition.
Posted Date:- 2021-10-27 04:42:00
We use lightning data service for creating, deleting, editing, or loading a record in our component without Apex code. It handles field-level security and sharing rules. Lightning data service enhances the user interface and performance consistency. The lightning data service's main advantage is we can carry out basic tasks without Apex code.
Posted Date:- 2021-10-27 04:41:28
To share code between Aura components, we create a service component. This is an Aura component which uses “aura:method†to expose the pieces of code which are to be shared. This component can then be included in other components and the shared pieces of code called.
For LWC, the process is simpler, we can create EcmaScript Modules. These are essentially JavaScript files which use the “export†keyword to export specific functions or variables we have defined. These can then be imported in the same manner we import Salesforce modules and freely used by our component.
Posted Date:- 2021-10-27 04:40:46
Aura components can contain and utilise LWCs, including communicating with them via events and component methods. However, the opposite is not true, an LWC cannot be composed of Aura components, and they can only ever be its parent.
Code can also be shared between Aura and LWC components using an ES Module.
Posted Date:- 2021-10-27 04:40:16
The lightning design system provides style guides and advanced UX best practices for building pixel-perfect applications that match the feel and look of the salesforce1 mobile app and lightning experience.
Posted Date:- 2021-10-27 04:39:22
A bundle includes Aura definitions and their associated resources. The aura definition can be an application, interface, component, and event. Aura Definition Bundle element is a folder that includes definition files, contrary to other metadata components, the aura definition bundle component is not a single file; it is a group of files.
Posted Date:- 2021-10-27 04:38:15
Following are the different types of events of salesforce lightning components:
> System Events: During the lightning app lifecycle, salesforce fires the system events.
> Application Event: The application event extent is across the lightning application, and any element that has enrolled for his event will get an alert.
> Component Event: The component event scope is within itself, or within the parent component of this event, all the parent components will get an alert.
Posted Date:- 2021-10-27 04:37:55
Lightning experience is the name for the latest salesforce desktop application, with the latest features, developed with an advanced User Interface(UI) and speed optimization.
Posted Date:- 2021-10-27 04:37:15
Aura is a freeware technology that powers the lightning components. Aura: namespace comprises all the main building blocks to define applications and components.
Posted Date:- 2021-10-27 04:36:53
The developer can add the Aura components to the Visualforce page in the following three ways:
* Use the <apex:includeLightning/> component and add the Lightning component for the Visualforce JavaScript library used in your Visualforce page.
* Create a reference to a Lightning app for declaring component dependencies.
* Use the $Lightning.createComponent() to create the component for a page by writing a JavaScript function
Posted Date:- 2021-10-27 04:36:28
Visualforce components are page-centric and work is mostly server-based. Lightning components, on the other hand, are client-side centric which accounts for their dynamic, mobile-friendly nature.
Posted Date:- 2021-10-27 04:36:00
For the Lightning component, the client-side is the component page acting as a JavaScript controller, on the contrary, the server-side acts as an Apex Controller.
Posted Date:- 2021-10-27 04:35:45
Not really. Lightning is a framework based on components.
Posted Date:- 2021-10-27 04:35:27
Yes, it does work with Visualforce.
Posted Date:- 2021-10-27 04:35:07
It is possible to use Lightning components, Salesforce 1 mobile app, custom standalone apps directly in Lightning Experience as well as template-based communities. Lightning components are used in the Visualforce page, for use in Salesforce Visualforce communities as well as the classic environment.
Posted Date:- 2021-10-27 04:34:49
We first create a Lightning tab for the Lightning component and subsequently include the tab in the navigation select list of Salesforce 1 mobile app and then the newly created tab to it.
Posted Date:- 2021-10-27 04:34:31
The Lightning components can be used in the following ways:
* Drag-and-drop components are meant for the Lightning App Builder and Community Builder.
* Add Lightning Components for Lightning Pages.
* Add Lightning Components for Lightning Experience Record Pages.
* Launch a Quick-action Lightning Component.
* Overrule the Lightning Component’s standard actions.
* Create custom applications
Posted Date:- 2021-10-27 04:34:12
The components act as functional units of the Lightning component framework. A reusable, modular section of UI is encapsulated within the components. They can range from a single line of text up to the entire application in terms of granularity.
Posted Date:- 2021-10-27 04:33:23
From the admin side, the Lightning version provides various customization leverages, including the framework with reusable low-code blocks that admins can use to build components and put them on multiple pages via easy drag and drop. Plus, the Appexchange offers many off-the-rack plugins, components, and applications that can be plugged in from the Appexchange.
Posted Date:- 2021-10-27 04:32:59
Lightning is an enhanced and upgraded Salesforce platform version that was created for simplifying the process of building apps, quickly customizing the ecosystem to boost the efficiency and productivity of internal users and their work, as well as for connecting with customers and making their experience better.
Posted Date:- 2021-10-27 04:32:38