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Note

Starting in Tapestry 5.3, Ajax event handlers typically have a void return type and use AjaxResponseRenderer to indicate which zone to update. The AjaxResponseRender approach means that the zone parameter's value (oridinarily indicating which zone to update) is no longer needed. Tapestry 5.4 introduced the async="true" parameter to avoid having to redundantly indicate which zone to update.

 

This return value is often just the zone's own body (as below), but it can also be an injected component or block. The value will be rendered, and that markup will be used on the client side to update the Zone's <div>.

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