Activity › Forums › Salesforce® Discussions › What is event.getSource() in Salesforce lightning and How to use it? Tagged: Button, Client Side Controller, event.getSource(), Salesforce Lightning Salesforce® Discussions What is event.getSource() in Salesforce lightning and How to use it? Posted by Shweta on January 31, 2020 at 1:41 PM What is event.getSource() in Salesforce lightning and How to use it? Sumit kumar replied 6 years, 3 months ago 2 Members · 1 Reply ButtonClient Side Controllerevent.getSource()Salesforce Lightning 1 Reply Sumit kumar Member January 31, 2020 at 1:47 PM Use event. getSource() in the client-side controller to get the button component that was clicked. Log In to reply. Public All Members My Connections Only Me PublicAll MembersMy ConnectionsOnly Me Public All Members My Connections Only Me