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What are the phases in application events propagation?
Here is the sequence of application event propagation. Event fired—An application event is fired. The component that fires the event is known as the source component. Capture phase—The framework executes the capture phase from the application root to the source component until all components are traversed.
What is event propagation in Salesforce?
The framework supports capture and bubble phases for the propagation of component events. These phases are similar to DOM handling patterns and provide an opportunity for interested components to interact with an event and potentially control the behavior for subsequent handlers.
Which application events are handled by?
Application Events are handled by any component have handler defined for event. These events are essentially a traditional publish-subscribe model. Application Event Example: In below example by using Application event, I’m passing the values from Component1 to a Component2 via event.
How do you stop event propagation in lightning?
Any handling event can stop propagation by calling stopPropagation() on the event. Bubble phase—The framework executes the bubble phase from the source component to the application root until all components are traversed or stopPropagation() is called.
What is the form of event propagation?
Which form of event propagation handles the registered container elements? Explanation: Event bubbling and capturing are two ways of event propagation in the HTML DOM API. With bubbling, the event is first captured and handled by the innermost element and then propagated to outer elements.
How does event propagation work?
Event propagation is a way to describe the “stack” of events that are fired in a web browser. So a click on the a tag also clicks on the row, the table, the div in which the table is nested, and anything else all the way out to document , the complete container that holds everything in your browser.
What is the sequence of application event propagation?
Here is the sequence of application event propagation. Event fired —An application event is fired. The component that fires the event is known as the source component. Capture phase —The framework executes the capture phase from the application root to the source component until all components are traversed.
How to stop the propagation of an event?
Any handling event can stop propagation by calling stopPropagation () on the event. Bubble phase —The framework executes the bubble phase from the source component to the application root until all components are traversed or stopPropagation () is called.
How does event propagation work in Salesforce application?
The event is captured and trickles down from the application root to the source component. The event can be handled by a component in the containment hierarchy that receives the captured event. Event handlers are invoked in order from the application root down to the source component that fired the event.
Where does event propagation take place in JavaScript?
That’s because events don’t just affect the target element that generated the event—they travel up and down through the DOM tree to reach their target. This is known as event propagation In modern browser event propagation proceeds in two phases: capturing, and bubbling phase. Before we proceed further, take a look at the following illustration: