§ Architected and developed a web interface Order Entry System (OEI) that reduced data entry time by 97% and almost eliminated errors (duplicate and uncompleted orders). A change in a child component can be communicated to the parent component via component event. The user could have clicked on a link to leave the page, or typed in a new URL in the address bar. Event propagation typically involves two phases event bubbling and event capturing. Enter updateExpenseItem in the New Event window. What are the basic differences between Application Event and Component Event? Component events are used to do communication between child and parent. H2O, Colab, Theano, Flutter, KNime, Mean. They use bubbling and capture same as used in DOM events. With so much attention on this topic, I thought of putting a comparison of when to use Platform Events vs. Vancouver § Integrated all middle-tier systems with Salesforce. The polyfill provides a shadow DOM in these browsers. This could mean one of many things. --> UI Validations. actionsupport in visualforce. As per Forbes magazine, nearly 55% of enterprises predict cloud computing will enable new business model in three years. Base components are nothing but some handy, ready made components provided to us by salesforce in order to enable us to build our components rapidly e. The c/ prefix is simply the namespace of it – in Salesforce orgs the default namespace is usually c. It was founded in 2000 under the name ExactTarget. Copado, a Leading Cloud-Based Change and Release Management Solution, Forms Strategic Alliance with Vlocity to Reduce Software Release Time and Deployment Costs for Industry Cloud Apps… READ MORE. This component demonstrates this principle in its simplest form. Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, PHP, Python, Bootstrap, Java and XML. currentTarget is returning the locked element. Here's how can you ensure that your custom Visualforce or Lightning pages also have the best possible experience for everyone -- even users who are blind or have vision impairments, or have impaired motor control and can't use a mouse. Create a Calendar View in Salesforce. It would be nice to add multiple invitees to a Group Event at once using Public Groups. This ties in to DOM manipulation because the DOM itself is driven by Salesforce data. Login to your Salesforce Customer Account. It’s been a long time since I posted anything here but figured the release of the Box SDK for Salesforce was a good time to pick it back up. See the complete profile on LinkedIn and discover Valentino’s connections and jobs at similar companies. Salesforce Lightning Design System for React. You will be able to master the Salesforce clouds like sales cloud, service cloud, community cloud, analytics cloud, marketing cloud, etc. actionsupport in visualforce. In 2016, Salesforce. Component events :- are used to do communication between child and parent. I hope this is the one! And with many heroes of the Salesforce world attending such as Chris Duarte, VP of Trailhead, Susannah Kate of #LadiesBeArchitects, and Steven Herod, one of my personal IDOLS…. System Event- these are the events fired by Salesforce’s system during the lifecycle of the lightning app. It is the W3C(World Wide Web Consortium) Standard. Thanks to using standard DOM events, this extra ceremony isn't needed. React is a JavaScript library for building view components. 931 total views, no views today. Salesforce Customer Secure Login Page. A change in a child component can be communicated to the parent component via the component event. One Customer Platform to connect everything. We are the Product UX team at @salesforce. A Lightning web component uses a Lightning message channel to access the Lightning Message Service API. Use Salesforce Edge to service Salesforce and Community domains, gaining better connectivity and performance. Salesforce Integration Interview questions and answers. In Salesforce Lightning components, we can build applications by assembling components created by us and other developers. It has actually been around for quite a while. Event Monitoring available with SHIELD. Components can also create and dispatch custom events. Save Saved Remove. You can try to emulate mutation event with onpropertychange in IE (and fall back to the brute-force approach if non of them is available). Expertise in Salesforce technologies including Sales and Service Cloud, Apex and Visualforce, coding best practices and integration with 1 week ago Salesforce Support Administrator. * Internal browser / DOM events like GC, paints, and CSS recalculates * HTTP waterfalls * Memory Utilization. I joined Salesforce Ohana in 2015, after 4 years in the Oracle Marketing Cloud. How to read root element in XML DOM ? A. Udemy is an online learning and teaching marketplace with over 100,000 courses and 24 million students. jQuery also provides capabilities for developers to create plugins on top of the JavaScript library. With JavaScript in the browser, events are all over the place. Eventbrite brings people together through live experiences. GoToMeeting is a mobile leader according to the most important critics — our customers! Across iOS and Android, our online meeting app has the highest overall rating when compared to our competitors. Component events: to talk to a parent using the capture and bubbling mechanism, like with DOM events. He started my career on Salesforce during his university studies and based his final thesis on it. What are the basic differences between Application Event and Component Event? Component events are used to do communication between child and parent. If I move the event handler from the li to the h3 it's perfectly happy which suggests that the locking issues are occurring on lowest-level DOM elements inside the iteration. This component demonstrates this principle in its simplest form. render() call, you will see that this is never executed. Login to your Salesforce Customer Account. Obsolete methods Event. Using JavaScript inside Visualforce pages gives you access to a large range of existing JavaScript functionality, such as JavaScript libraries, and other ways to customize your pages. So the answer of your first statement is. With just one back-office you can sell your hotel in 3 platforms (desktop, mobile and Facebook). Component Event - Scope of this event is within itself or the parent component of this event, all the components declared within the parent component would get notified of this event. 2019 Salesforce Retail Campfire. regionCode }}. Adobe and Salesforce entered the customer data platform (CDP) mix. Developing an app is just the start. You can read more about them in Configure Event Propagation. Introduction. Salesforce helps companies connect with their customers in a whole new way. All custom events fired by DataTables are fired with the namespace dt in order to prevent conflicts arising with other jQuery plug-ins which also fire events. An event can be triggered by the user action e. Usually, one component is interested by the event, like an event aggregator. Salesforce Overall. Enter updateExpenseItem in the New Event window. Because of that, in this blog I will try to explain the keys of this announcement. In this post, we will examine the magic that is the source code to gain a better understanding of lightning applications, lightning components, and lightning events. Salesforce supports some browsers that don't implement the Shadow DOM web standard. Given a jQuery object that represents a set of DOM elements, the. The next point is to remove the event lister for the DOM. Evernote Business + Salesforce integration is the one place for all the information your team needs to succeed. Salesforce Commerce Cloud Cartridges: Are They All The Same? Of course, the answer is no. The sample code in this guide uses out-of-the-box components from the Aura framework, such as aura:iteration and. I am binding my event to the document and then using a 'DOM Object' selection type (of document) in order to specify the context for the event. In our product development, we've found that Salesforce CPQ testing is particularly difficult with traditional automation methods such as Selenium. They use bubbling and capture the same as used in DOM events. System Event- these are the events fired by Salesforce's system during the lifecycle of the lightning app. Posted on February 2, 2019 by Force 201 Reply When I started working with Lighting Components a few years ago – the Aura ones – I intended to write a page similar to From Java to Apex , that would have been called “From Angular to Lightning Components”. UI API is a public Salesforce API that Salesforce uses to build Lightning Experience and Salesforce for iOS and Android. HTML DOM events allow JavaScript to register different event handlers on elements in an HTML document. Simple, Jackson Annotations, Passay, Boon, MuleSoft, Nagios, Matplotlib. The polyfill provides a shadow DOM in these browsers. What are the basic differences between Application Event and Component Event? Component events are used to do communication between child and parent. getchild element 14. Here are some key takeaways from Salesforce watchers who attended the conference. With Box, you get a single place to manage, secure, share and govern all of the content for your internal and external collaboration and processes. The second storage mechanism is designed for storage that spans multiple windows, and lasts beyond the current session. clicking the mouse button or tapping keyboard, or generated by APIs to represent the progress of an asynchronous task. getPreventDefault() Non-standard. The most commonly used event propagation phase for handling events is event bubbling. This Intellipaat Salesforce certification training is a comprehensive learning approach for mastering the Salesforce Developer and Salesforce Administrator skills. Salesforce World Tour New York December 18, 2019 REGISTER NOW. Component events: to talk to a parent using the capture and bubbling mechanism, like with DOM events. Technical- and Business oriented with Developer, Administration and Architect experience and knowledge within Salesforce. Application: Application events follow a traditional publish-subscribe model. In fact, all of these elements utilize the shadow DOM to hide their complex markup and styling away. RegisterAfterReady() is called prior to the Form Control List Lookup Selects being populated on the DOM - Is this the expected behavior for RegisterAfterReady()? If so, what DOM event will wait for the Selects to be fully populated? Thanks, Neville. Event propagation typically involves two phases event bubbling and event capturing. There aren’t enough words in the dictionary to describe the significance of giving back. One more blog on Salesforce. Base components are nothing but some handy, ready made components provided to us by salesforce in order to enable us to build our components rapidly e. Tags: Apex, Chatter, VisualForce, Sandbox, Communities, Spring 17 · Status: Fixed Javascript Window. The pre-existing UI, now dubbed “Salesforce Classic” is still available, but Salesforce intends to eventually move all customers to the new Lightning. Applications events can talk to many components that can be interested by the event. Learn More. It is a web development concept, usually limited to a web application's client-side (including any web frameworks being used), and thus usually does not include web server or browser implementation details such as SAPIs or APIs unless publicly accessible by a remote web application. So, when you click the Add Invitees button on the New Event screen in Salesforce there would be an additional option of Public Group. In particular, Web applications may wish to store megabytes of user data, such as entire user-authored documents or a user's mailbox, on the client side for performance reasons. June 2018 – Present 1 year 6 months. Question I have is – I am trying to pre-populate some of the standard fields when creating a new custom object from a custom button. From online registration to agendas and planning logistics, Fonteva will integrate seamlessly into your events operation, turning Salesforce strength into successful events. The Document Object Model (DOM) connects web pages to scripts or programming languages by representing the structure of a document—such as the HTML representing a web page—in memory. If c:eventSource fires an event, it can handle the event itself. The event then bubbles up the containment hierarchy. Play by Play is a series in which top technologists work through a problem in real time, unrehearsed, and unscripted. System Event - these are the events fired by Salesforce's system during the lifecycle of the lightning app. Learn programming, marketing, data science and more. Salesforce Customer Secure Login Page. Now that we've used properties to expose data from our JavaScript to our HTML template, why don't we look at how to handle DOM events and react to it in the JavaScript file. The event then bubbles up the containment hierarchy. stopPropagation() Stops the propagation of events further along in the DOM. DOM, and event helpers. Giorgio ha indicato 1 #esperienza lavorativa sul suo profilo. Enabling Lightning in Salesforce. Events may only be fired within a controller or component file, but not in a renderer. This year, Vlocity is honored to reflect with Salesforce on a community project we started work on at the end of last year with WoodGreen Community Services, a local non-profit in the Toronto area… READ MORE. For this particular event, no other listener will be called. js, Weka, Solidity, Org. when paging only the visible elements are actually available in the DOM). If we want to get this record id on clicking, we have to use event. Component Event: Scope of this falls within the parent component of this event. The focus and blur events are typically associated with HTML elements such as , and , but it is important to note that the onfocus and onblur event attributes for base Lightning components do not raise the focus or blur Document Object Model (DOM) events. Component Event- Scope of this event is within itself or the parent component of this event, all the components declared within the parent component would get notified of this event. The list of Winter '20 features below apply to Salesforce Lightning Experience only. Salesforce supports some browsers that don't implement the Shadow DOM web standard. Connect with Dom Gieras and other Salesforce customers, partners and employees. Event Monitoring available with SHIELD. Here's how can you ensure that your custom Visualforce or Lightning pages also have the best possible experience for everyone -- even users who are blind or have vision impairments, or have impaired motor control and can't use a mouse. They use bubbling and capture same as used in DOM events. Some base components are Lightning:button , Lightning:buttonGroup , Lightning:input. Statement #1 You can add multiple classes to a single DOM element. Salesforce index. Salesforce helps companies connect with their customers in a whole new way. The 13rd of December this year, Salesforce announced the release of Lightning Web Components (LWC). Aura provides out-of-the-box components in the aura and ui namespaces. Closing the browser window will cause the event to be triggered. Parts of the DOM emit events that correspond to what that DOM object does. Lightning Events are quite similar to DOM events in Javascript and I am pretty sure if you are coming from a web development background you would be well aware of them. Salesforce Commerce Cloud Cartridges: Are They All The Same? Of course, the answer is no. AppExchange Partner Program. One more blog on Salesforce. It is the W3C(World Wide Web Consortium) Standard. For any Salesforce related training (Admin,Apex,Advance Apex,Web Services,Lightening). Contribute to salesforce/design-system-react development by creating an account on GitHub. UI API is a public Salesforce API that Salesforce uses to build Lightning Experience and Salesforce for iOS and Android. The only difference between them is that the CustomEvent class will allow you to store information in its detail property and thus transmit that information to the listeners of the event. Author posted by Jitendra on Posted on February 2, 2019 October 22, 2019 under category Categories Lightning, Lightning Web Components, Salesforce and tagged as Tags Apex, code snippet, Lightning component, Lightning Web Component, LWC with 1 Comment on Get Current User Id in Salesforce. As with typical DOM events, the DataTables custom events bubble up through the document, so you can listen for events using the delegate form of $(). Application Event: The event has a scope which is throughout the lightning App, and any component which has registered for this event gets a notification. Activities pack enables you to automate Salesforce processes. Applications events can talk to many components that can be interested by the event. Salesforce Lightning Design System for React. I joined Salesforce Ohana in 2015, after 4 years in the Oracle Marketing Cloud. The focus and blur events are typically associated with HTML elements such as , and , but it is important to note that the onfocus and onblur event attributes for base Lightning components do not raise the focus or blur Document Object Model (DOM) events. Salesforce AppExchange is a marketplace serving apps for best enterprises in world, to keep up the trust they want your custom app to live upto security standards of Salesforce. • Salesforce Rest api exposing, the code contains around 5-10 salesforce rest endpoints • Accessing Salesforce Api in Node • Complex codework in js to make dynamic DOM changes based on user interaction • Worked primarily on Nodejs,js , static html exposing in Nodejs and webservice access in Node. Vlocity Announces Industry Cloud Continuous Delivery™ Solutions for Salesforce, Powered by Copado. Obsolete methods Event. It is a web development concept, usually limited to a web application's client-side (including any web frameworks being used), and thus usually does not include web server or browser implementation details such as SAPIs or APIs unless publicly accessible by a remote web application. 2019 Salesforce Retail Campfire. However, there are some differences in the rules, which we will cover later in this section. Navigation Service. Note that in my own testing, event. c:container contains c:eventSource but it’s not the owner because it’s not the outermost component in the markup, so it can’t handle the bubbled event. Web Components provide strong encapsulation for reusable components, while React provides a declarative library that keeps the DOM in sync with your data. Here’s an example of creating and dispatching (firing) an event in the propertyTile Lightning web component. New product release: CamCard for Salesforce allows Salesforce users to scan business cards directly into Salesforce. Components can also create and dispatch custom events. The event then bubbles up the containment hierarchy. To find Lightning web components on the page, look for element names that contain a hyphen. Posted by Unknown at. If we want to get this record id on clicking, we have to use event. You can read more about them in Configure Event Propagation. com uses features in their WSDL which few toolkits support yet. The base unrender() function deletes all the DOM nodes rendered by a component’s render() function. Posted on February 2, 2019 by Force 201 Reply When I started working with Lighting Components a few years ago – the Aura ones – I intended to write a page similar to From Java to Apex , that would have been called “From Angular to Lightning Components”. That method calls the doGetText() method on the controller. In our product development, we've found that Salesforce CPQ testing is particularly difficult with traditional automation methods such as Selenium. stopPropagation() Stops the propagation of events further along in the DOM. In this case the event is triggered at the child level and propagates up to the DOM. We can get the Salesforce data in Lightning Web Component through Imperative Service. Salesforce Pardot users suffered a major software outage on May 17 that lasted for days. Question I have is – I am trying to pre-populate some of the standard fields when creating a new custom object from a custom button. The most important thing which I like about Salesforce is giving back. Application events are fired from a component, and any other component can handle the event. The latest Tweets from SalesforceUX (@SalesforceUX). Salesforce Customer Secure Login Page. Enabling Lightning in Salesforce. With over 34 million euros raised, Techinnov Funding Meetings is the reference event for faster searches financing growth companies. More about Salesforce. If I move the event handler from the li to the h3 it's perfectly happy which suggests that the locking issues are occurring on lowest-level DOM elements inside the iteration. Salesforce Integration Interview questions and answers. isDefaultPrevented() to determine if this method has been called by an event handler that was triggered by this event. UI API is a public Salesforce API that Salesforce uses to build Lightning Experience and Salesforce for iOS and Android. In particular, Web applications may wish to store megabytes of user data, such as entire user-authored documents or a user's mailbox, on the client side for performance reasons. Component events: to talk to a parent using the capture and bubbling mechanism, like with DOM events. Go from signing up to sending emails in minutes. Windows animates the resize by doing it several times as you drag the window (by default, you can change it in the registry I think). Activities pack enables you to automate Salesforce processes. The most commonly used event propagation phase for handling events is event bubbling. All custom events fired by DataTables are fired with the namespace dt in order to prevent conflicts arising with other jQuery plug-ins which also fire events. Through Salesforce. A change in a child component can be communicated to the parent component via component event. Web Components provide strong encapsulation for reusable components, while React provides a declarative library that keeps the DOM in sync with your data. The polyfill provides a shadow DOM in these browsers. This can be useful, for example, to know when a new DataTable has been created, which can be listened for using the init event thus:. VarniSoft is a Global Leader in providing Consulting, IT Services, IT Solutions and Outsourcing. Shadow DOM can encapsulate the behavior (markup, style etc. With so much attention on this topic, I thought of putting a comparison of when to use Platform Events vs. Customize this behavior by overriding unrender() in your component’s renderer. DOM, and event helpers. The 13rd of December this year, Salesforce announced the release of Lightning Web Components (LWC). In this post I am going to share Salesforce Integration Interview questions and answers. getroot element 13. If your development partner is struggling with security review, we are here to help, and done the same for 15+ ISV partners. Usually, one component is interested by the event, like an event aggregator. Because Lightning web components use shadow DOM, if a call to appendChild() manipulates the DOM, styling isn’t applied to the appended element. Salesforce Pardot users suffered a major software outage on May 17 that lasted for days. Brilliant article – really helpful & have used in many places already. Application events are fired from a component, and any other component can handle the event. I know that Activities is both task and events, but, unlike a contact or a custom object, I cannot find a place in the SF setup where I can find Fields and Relationships: 1. First when a mouse-button is clicked, the onmousedown event is triggered, then, when the mouse-button is released, the onmouseup event is triggered, finally, when the mouse-click is completed, the onclick event is triggered. That method calls the doGetText() method on the controller. Salesforce Lightning Design System for React react javascript design-systems ui lightning frontend reactjs JavaScript BSD-3-Clause 239 491 97 26 Updated Nov 8, 2019. DOM rendering time is linearly proportional to these values (But timing of redraws depends on hardware) Rendering must be slow enough to time, fast enough to probe several links (100+ urls/sec) Bonus Points: search engine URL address bar templates on iOS are static and predictable demo #5. srcElement are both working (returning the h3 not the li) but event. Hello, I'm Brett with WIPDevelopers. Discover everything Scribd has to offer, including books and audiobooks from major publishers. No marketing experience required, no strings attached. We will explore Lightning events in later chapters. Events in Lightning web components are built on DOM Events, a collection of APIs and objects available in every browser. Here’s an example of creating and dispatching (firing) an event in the propertyTile Lightning web component. actionsupport in visualforce. There are additional Winter '20 features available to Salesforce Classic only, Salesforce Lightning Experience and Classic, Community Enhancements, Mobile Enhancements, Other Enhancements in the Winter '20 Release Highlights post. The focus and blur events are typically associated with HTML elements such as , and , but it is important to note that the onfocus and onblur event attributes for base Lightning components do not raise the focus or blur Document Object Model (DOM) events. I hope this is the one! And with many heroes of the Salesforce world attending such as Chris Duarte, VP of Trailhead, Susannah Kate of #LadiesBeArchitects, and Steven Herod, one of my personal IDOLS…. The c/ prefix is simply the namespace of it - in Salesforce orgs the default namespace is usually c. I've been using dynamic actions based on custom events in one of my Oracle Apex pages. In this course, Play by Play: Understanding Lightning Web Components for Salesforce Developers, Chuck Liddell and Don Robins treat the topic like an onion, peeling back one layer at time. It’s been a long time since I posted anything here but figured the release of the Box SDK for Salesforce was a good time to pick it back up. They use bubbling and capture same as used in DOM events. city }}, {{ selected_store. Establishes a connection to a specified Salesforce Org and provides a scope for all subsequent activities. Component events are used to do communication between child and parent. You can use phantom, firefox, etc, but we recommend headless chrome. Contact Salesforce to get this access. How SOAP and REST will Communicate ? A. The Event interface represents an event which takes place in the DOM. research and events for sophisticated professionals driving digital customer experience strategy, evolving the. Harshit Pandey has a number of great posts on how to build applications on Salesforce using Polymer. Lightning Data Service is built on top of User Interface API. RePEc Biblio Topic Tree. [email protected] Statement #1 You can add multiple classes to a single DOM element. an answer to Salesforce Stack. It has actually been around for quite a while. textResponseApexOutputText) DOM Ids of regular HTML elements is simpler (textResponseSpan) When you click the button that says “Get Static Text”, the onClick event will fire and call. In fact, Capgemini is here to help you get the most from your own Salesforce ohana and the business results that Salesforce solutions can drive. How To Display Lightning Component In Visualforce Page-Sample August 19, 2017 September 21, 2017 piyush soni Lightning Component Hi Guys, Today in this post we are going to learn on, How to Use or Display Lightning Components in a Visualforce Page. * Internal browser / DOM events like GC, paints, and CSS recalculates * HTTP waterfalls * Memory Utilization. The polyfill provides a shadow DOM in these browsers. 2019 Evénement Salesforce : Check out highlights of our latest events and discover how to connect to your customers in a whole new way. EVP, Mobile @Salesforce. To find Lightning web components on the page, look for element names that contain a hyphen. Introduction. No marketing experience required, no strings attached. Navigate to the Activity record created in step 4. TrailheaDX is the must-attend conference of the year for everyone who wants to learn about building on the Salesforce Platform. What is Salesforce? Unify marketing, sales, service, commerce, and IT teams with our entire app suite, Customer 360. 360 SMS App, the “Top-Ranked Salesforce Messaging App” is capable of marketing your products and services, it enables you to reach more and more clients in a fast, easy and. What you could do is add a delay. The event propagation is very similar to browser events; both have capture and bubble phases, as we discussed in the previous section. Enter updateExpenseItem in the New Event window. I come from Italy, where I was an e-learning flash developer. The base unrender() function deletes all the DOM nodes rendered by a component’s render() function. Event Log tag: An important part of Lightning components is its use of events and triggers. Foi fundada em 1997 na Guarda, Portugal. That's all. View Dom Tucciarone's profile on the Salesforce Trailblazer Community. Tip: The onfocusout event is similar to the onblur event. What are the basic differences between Application Event and Component Event? Component events are used to do communication between child and parent. I know that Activities is both task and events, but, unlike a contact or a custom object, I cannot find a place in the SF setup where I can find Fields and Relationships: 1. How to read child element in XML DOM ? A. As part of the training, you will learn about Salesforce fundamentals, Visualforce, Apex language, dashboard, process automation and more. There aren’t enough words in the dictionary to describe the significance of giving back. Application events :- are used to communicate any change in the component to a broader audience. target and event. If you fire an event in renderer the event will go and call the controller again and controller will instantiate again,setup data again and call renderer again and cycle will repeat. How To Display Lightning Component In Visualforce Page-Sample August 19, 2017 September 21, 2017 piyush soni Lightning Component Hi Guys, Today in this post we are going to learn on, How to Use or Display Lightning Components in a Visualforce Page. Today, at the Salesforce Dreamforce conference in San Francisco, we announced the preview of a new Salesforce connector for Microsoft Power Query for Excel. Salesforce Lightning Design System for React. Adventures in Salesforce. He started my career on Salesforce during his university studies and based his final thesis on it. The shadow DOM is a subtree that branches off the DOM (light DOM). How to read child element in XML DOM ? A. Join LinkedIn Summary. Lightning Component Framework is one of the methods in Salesforce which is used to develop user interface. com began marketing Salesforce Lightning: a new variation of their user interface that’s focused on ease of use and speed. This hierarchical structure applies to the organization of objects in a Web document. This is something in which Salesforce has been working very hard, and which is surrounded by an aura of mystery. With JavaScript in the browser, events are all over the place. GoToMeeting is a mobile leader according to the most important critics — our customers! Across iOS and Android, our online meeting app has the highest overall rating when compared to our competitors. And although this results in a changed value, the onChange DOM event does not fire. I always say, go to every single Salesforce event, because you never know when you might have that chance encounter that changes everything for you. Navigation Service. Solutions typically involved passing controller instances as attributes, preferably wrapped up in an interface to avoid directly coupling presentation items to specific Apex classes. An event can be triggered by the user action e. getPreventDefault() Non-standard. The below picture shows the event phases both in capture and bubbles phase. Component events :- are used to do communication between child and parent.