How does the aura handler work in Lightning?

How does the aura handler work in Lightning?

1. aura:valueInit – : Indicates that an app or component has been initialized. This event is automatically fired when an app or component is initialized, prior to rendering. The aura:valueInit event is handled by a client-side controller. A component can have only one tag to handle this event.

When to use renderif in aura Component Library?

Use aura:renderIf if you expect to show the components for both the true and false states, and it would require a server round trip to instantiate the components that aren’t initially rendered. Switching condition unrenders current branch and renders the other.

Can a component have more than one aura handler?

A component can have only one tag to handle this event. 2. aura:waiting -: Indicates that the app or component is waiting for a response to a server request.

When to use the else attribute in aura?

The else attribute allows you to render an alternative when isTrue evaluates to false. The expression in isTrue is re-evaluated every time any value used in the expression changes. When the results of the expression change, it triggers a re-rendering of the component.

Is there a module named paginator in trailhead?

No MODULE named markup://c:paginator found : [markup://c:productTileList] You have a Lightning Aura Component with the name paginator, probably from another Trailhead module. Delete that component first before attempting to deploy a Lightning Web Component with the same name.

What is the handler attribute in Salesforce Lightning?

Action, of course, is the method to actually execute to handle the event. The controller assigned to the component (first line of code) refers to the server-side controller (ContactListController) you created in module 2. The contacts attribute is defined to hold the list of Contact objects returned from the server.