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ramesh babu 114
what is the use of Action support in salesforce
what is the use of Action support in salesforce
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actionSupport component adds AJAX support to other components in visualforce. It allows components to be refreshed asynchronously by calling the controller’s method when any event occurs (like click on button). It allows us to do partial page refresh asynchronously without refreshing full page.
Refer the below link for examples and try it in your developer org to get clear idea.
https://developer.salesforce.com/docs/atlas.en-us.pages.meta/pages/pages_compref_actionSupport.htm
http://sfdcsrini.blogspot.com/2015/02/how-to-use-apexactionsupport-tag-in.html
Mark it as a best solution if it help to solve your query.
https://www.sfdc-lightning.com/2018/09/action-support-in-salesforce.html