When does the aura valuechange event get fired?
This event is fired when an attribute value changes. Handle this event using the aura:handler tag. A component can have multiple aura:handler tags to detect changes to different attribute values. This example updates an attribute value, which fires the aura:valueChange event.
Do you need the name attribute in aura handler?
I will add a clarification that not only is the ‘name’ attribute not required in the aura:handler, but it will not work if you have the attribute. So, the ‘name’ attribute in aura:handler is used for COMPONENT Lighting Events, but you must remove the attribute in order to handle APPLICATION Lightning Events.
How to write not ( field _ name ) in aura if statement?
I am close to having the conditions render like I want, but I can’t figure out how to write in a not (field_name) type of condition into the aura:if statement. Since aura:if require isTrue, I need to reverse engineer the condition so that the message displays when isTrue=”not (Boolean_Field)
How to reverse engineer aura if not condition?
Since aura:if require isTrue, I need to reverse engineer the condition so that the message displays when isTrue=”not (Boolean_Field) Here’s my code. Any suggestions?
How are event handlers handled in Lightning aura?
The event attribute specifies the event being handled. The format is namespace:eventName. In this example, when the event is fired, the handleComponentEvent client-side controller action is called. Component event handlers are associated with the bubble phase by default. To add a handler for the capture phase instead, use the phase attribute.
How to handle an event in Lightning component?
Use in the markup of the handler component. For example: The name attribute in must match the name attribute in the tag in the component that fires the event. The action attribute of sets the client-side controller action to handle the event.
How is an event handled in a component?
A component event can be handled by the component that fired the event or by a component in the containment hierarchy that receives the event. Use in the markup of the handler component.