![onLoad]( "onLoad")
本文介绍了从javascript onload事件执行managebean方法的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述 如何从javascript发出更新< h：dataTable> 的ajax请求？我目前正在使用 @Postconstruct 加载初始数据，但这显着延迟了初始页面加载。 我是考虑使用 onload 事件< body> HTML标记来触发请求并更新数据表。解决方案在理论中，以下内容应该这样做。 < h：body> < f：ajax event =loadlistener =＃{bean.onload}/> < / h：body> with public void onload（AjaxBehaviourEvent event）{ // ... ... } 但是，出于某种原因不支持此功能。我曾经发布过问题报告。 以下是有效的，但它本质上是一个黑客。 < H：头部> < title> JSF 2.0 onload hack< / title> < script> window.onload = function（）{ document.getElementById（'hidden：link'）。onclick（）; } < / script> < / h：head> < h：body> < h：form id =hiddenstyle =display：none> < h：commandLink id =link> < f：ajax event =clicklistener =＃{bean.onload}/> < / h：commandLink> < / h：form> < / h：body> 如果您碰巧使用PrimeFaces，那么您可以使用其 < p：remoteCommand> autoRun 设置为 true 。 < h体：> < h：form> < p：remoteCommand name =onloadaction =＃{bean.onload}autoRun =true/> < / h：form> < / h：body> 或者如果您使用的是OmniFaces，那么您可以使用其< o：commandScript> < h：body> < h：form> < o：commandScript name =onloadaction =＃{bean.onload}/> < h：outputScript target =body> onload（）< / h：outputScript> < / h：form> < / h：body> < h：outputScript target =body> 在< body> 的末尾呈现< script> 。即将推出的OmniFaces 2.2将通过新 autorun 属性。 < h：body> < h：form> < o：commandScript name =onloadaction =＃{bean.onload}autorun =true/> < / h：form> < / h：body> How can I make an ajax request that updates a <h:dataTable> from javascript? I am currently loading the initial data using @Postconstruct but that is significantly delaying the initial page load.I am thinking about using onload event of <body> HTML tag to fire the request and update the datatable. 解决方案 In theory the following should do it.<h:body> <f:ajax event="load" listener="#{bean.onload}" /></h:body>withpublic void onload(AjaxBehaviourEvent event) { // ...}However, this is not supported for some reason. I've ever posted an issue report about that. The following works, but it's in essence a hack.<h:head> <title>JSF 2.0 onload hack</title> <script> window.onload = function() { document.getElementById('hidden:link').onclick(); } </script></h:head><h:body> <h:form id="hidden" style="display:none"> <h:commandLink id="link"> <f:ajax event="click" listener="#{bean.onload}" /> </h:commandLink> </h:form></h:body>If you happen to use PrimeFaces, then you can use its <p:remoteCommand> with autoRun set to true.<h:body> <h:form> <p:remoteCommand name="onload" action="#{bean.onload}" autoRun="true" /> </h:form></h:body>Or if you're using OmniFaces, then you can use its <o:commandScript><h:body> <h:form> <o:commandScript name="onload" action="#{bean.onload}" /> <h:outputScript target="body">onload()</h:outputScript> </h:form></h:body>The <h:outputScript target="body"> renders the <script> in the end of the <body>. The upcoming OmniFaces 2.2 will remove this need by new autorun attribute.<h:body> <h:form> <o:commandScript name="onload" action="#{bean.onload}" autorun="true" /> </h:form></h:body> 这篇关于从javascript onload事件执行managebean方法的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！ 10-21 15:18