如何从服务器端执行javascript方法? [英] How to execute javascript method from server side?

问题描述

在primefaces中，有一个RequestContext类，它增加了从服务器端调用javascript方法的功能:

in primefaces there's the RequestContext class which add the ability to invoke javascript method from server side :

RequestContext context = RequestContext.getCurrentInstance();          
        //execute javascript oncomplete  
        context.execute("PrimeFaces.info('Hello from the Backing Bean');"); 

我想知道是否可以在不使用撇号的情况下用jsf 2完成该操作，请告知.

i was wondering if it's possible to accomplish that with jsf 2 without using primefaces, please advise.

推荐答案

最简单但也是最hackest的方法是设置一个表示<h:outputScript>内容的属性，并通过将其客户端ID添加到PartialViewContext#getRenderIds().

The easiest but also hackiest way would be to set a property which represents the content of a <h:outputScript> and ajax-update it by adding its client ID to PartialViewContext#getRenderIds().

所以，给定一个

<h:panelGroup id="script"><h:outputScript>#{bean.script}</h:outputScript></h:panelGroup>

您可以使用ajax更新它

you can ajax-update it with

script = "alert('peek-a-boo')";
FacesContext.getCurrentInstance().getPartialViewContext().getRenderIds().add("script");

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