Find all needed information about Visualforce Actionsupport Rerender. Below you can see links where you can find everything you want to know about Visualforce Actionsupport Rerender.
https://developer.salesforce.com/docs/atlas.en-us.pages.meta/pages/pages_compref_actionSupport.htm
Adding Visualforce to a Salesforce AppExchange App ... <apex:actionSupport event="onclick" 07 action="{!incrementCounter}" 08 ... reRender: Object: The ID of one or more components that are redrawn when the result of an AJAX update request returns to the client. This value can be a single ID, a comma-separated list of IDs, or a merge field ...
https://salesforce.stackexchange.com/questions/129347/visualforce-required-fields-and-rerender
Try specifying immediate="true" on your actionSupport tag. Without that attribute, the visualforce page will try to submit the form to the server, which will trigger the page validation. Specifying this tag will prevent the form submission, and rerender the section. From the actionSupport documentation:
https://www.salesforcetutorial.com/render-use-rerender-rendered-attributes/
It is a Boolean value weather the component is rendered on visualforce page. If it is not specified, default value is always true. What is reRender Attribute? This attribute is useful to render some other visualforce component based Boolean value. See the below example to understand usage of reRender & rendered attributes.
https://stackoverflow.com/questions/8976144/salesforce-visualforce-rerender-pull-values-from-page-not-the-record
Salesforce (Visualforce): Rerender - pull values from page, not the record? Ask Question Asked 7 years, 10 months ago. Active 7 years, ... to my actionSupport that can evaluate the picklist value for the inputField the user selects - and use THAT to toggle my "rendered". ... visualforce rerender the parent page table from child. 1. Show timer ...
https://www.mstsolutions.com/technical/re-render-visualforce-page-forms-using-apexregion/
ApexRegion is a Visualforce page tag that is used to increase the visualforce page forms performance. It rerenders only the necessary section of the page that allow us to make the form work without any issues. The server processes only the action region area to avoid the required field issues.
https://salesforce.stackexchange.com/questions/169808/actionsupport-rerender-not-working-in-my-vf-page
As far as I remember Visualforce rerender doesn't recoginse well rerendering of sibilings in DOM, it works beter when inner DOM element is trying to rerender parent DOM …
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