什么是a4j事件序列? [英] What is the a4j event sequence?

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问题描述

一个 a4j:commandLink a4j:commandButton 的事件顺序是什么?

What is the event sequence of a a4j:commandLink or a4j:commandButton?

是对的: onclick - > actionListner > oncomplete - > reRender

Is it right: onclick->actionListner->oncomplete->reRender?

reRender 来自 oncomplete


When action happens?

推荐答案

onclick 最终用户点击生成的HTML元素时,JavaScript被称为第一个。当JavaScript代码返回 false 时,所有关联的 ActionListener 在JSF中的实现将按照它们与组件的关联的顺序来调用它。如果听众没有抛出任何异常,那么真正的动作将被调用。当操作返回成功的响应时,在 reRender 中指定的组件将在客户端更新。最后,将调用 oncomplete JavaScript。

The onclick JavaScript is called the first when the enduser clicks the generated HTML element. When the JavaScript code does not return false, then all associated ActionListener implementations in the JSF side will be invoked, in the order of their association with the component. If the listeners haven't thrown any exception, then the real action will be invoked. When the action returns a successful response, then the components specified in reRender will be updated in the client side. Finally the oncomplete JavaScript will be called.

如果您有两个客户端和服务器端,并知道如何使用它。我强烈推荐客户端使用Firebug,在服务器端推荐使用Eclipse。您当然也可以使用 alert() s或 System.out.println() s来做穷人的调试。

It's pretty easy to track yourself if you have a debugger in both the client and server side and know how to use it. I strongly recommend Firebug for the client side and Eclipse for the server side. You can of course also always do poor man's debugging using alert()s or System.out.println()s.

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