有一种简单的方法可以在调用<f:ajax listener>
之前和之后调用JavaScript操作,例如我想在之前调用window.alert("pre")
,在支持bean {{1}中调用 window.alert("post")
之后调用onChange
}:
ACtrl
<h:form>
<h:inputText id="anId" value="#{cityCtrl.dbHost}">
<f:ajax event="change" listener="#{aCtrl.onChange}" execute="@all"/>
</h:inputText>
</h:form>
添加多个@ManagedBean
public class ACtrlimplements Serializable {
public void onChange(AjaxBehaviorEvent event) {
System.out.println("something changed");
}
}
元素似乎不起作用(也许它应该?!),例如在
f:ajax
<h:form>
<h:inputText id="anId" value="#{cityCtrl.dbHost}">
<f:ajax event="change" listener="#{aCtrl.toggle}" execute="@all"/>
<f:ajax event="change" listener="#{aCtrl.onChange}" execute="@all"/>
<f:ajax event="change" listener="#{aCtrl.toggle}" execute="@all"/>
</h:inputText>
</h:form>
仅调用@ManagedBean
public class ACtrlimplements Serializable {
public void onChange(AjaxBehaviorEvent event) {
System.out.println("something changed");
}
public void toggle(AjaxBehaviorEvent event) {
System.out.println("blah");
}
}
。
答案 0 :(得分:14)
使用onevent
属性。它必须指向回调函数引用(所以不包括括号!):
<f:ajax ... onevent="functionName" />
因此实际的回调函数看起来像这样(JSF将自己提供参数):
function functionName(data) {
var status = data.status; // Can be "begin", "complete" or "success".
var source = data.source; // The parent HTML DOM element.
switch (status) {
case "begin": // Before the ajax request is sent.
// ...
break;
case "complete": // After the ajax response is arrived.
// ...
break;
case "success": // After update of HTML DOM based on ajax response.
// ...
break;
}
}