Salesforce Platform Developer I Certification Guide

Value providers

You've just seen the different prefixes to call a method or display some variables. We call these prefixes value providers. Let's have a look at the different value providers:

• v: The v (like {!v.message}) stands for view. You will display the data after the provider. In this case, this is the value of the attribute message.
• c: The c (like {!c.handleMyEvent}) stands for controller. You will call a function from the JavaScript controller in your component, or from an outside Apex class into your JavaScript controller or helper. You can call a custom event from this value provider with c:myEvent.

Let's build a Lightning component step by step and explain it while we do so.

We will build a Lightning component that will call ...