What is action function in Salesforce?
Actionfunction is used Actionfunction component triggers an action if a user clicks on any custom link or button used in visualforce page. Actionfunction is used Salesforce Tutorial Config & Customization
What does the action parameter do in Salesforce?
the action parameter will call the method you want as soon as the page loads. It is a dangerous attribute, one that will be pointed out to you if you’ll go through Salesforce’s security review process.
What is remote action in Salesforce?