A component that provides support for invoking controller action methods directly from JavaScript code using an AJAX request. An <apex:actionFunction> component must be a child of an <apex:form> component.
<apex:page controller="exampleCon">
<!-- Add the onclick event listener to a panel. When clicked, the panel triggers
the methodOneInJavascript actionFunction with a param -->
<apex:outputPanel onclick="methodOneInJavascript('Yes!')" styleClass="btn">
Click Me
</apex:outputPanel>
<apex:form>
<apex:actionFunction action="{!methodOne}" name="methodOneInJavascript" rerender="showstate">
<apex:param name="firstParam" assignTo="{!state}" value="" />
</apex:actionFunction>
</apex:form>
</apex:page>
In the above visualforce page javascript method in the onclickevent will call the apex controller method with the help of actionfunction. Apex controller. With the help of actionfunction we can able to make a call to the apex controller class
/*** Controller ***/
public class exampleCon {
String uname;
public String getUsername() {
return uname;
}
public PageReference sayHello() {
uname = UserInfo.getName();
return null;
}
public void setState(String n) {
state = n;
}
public String getState() {
return state;
}
public PageReference methodOne() {
return null;
}
private String state = 'no';
}
Check other blog post link which might be helpful for you
A component that provides support for invoking controller action methods directly from JavaScript code using an AJAX request. An <apex:actionFunction> component must be a child of an <apex:form> component.
Example 1:-
<!-- Page: -->
<apex:page controller="exampleCon">
<apex:form>
<!-- Define the JavaScript function sayHello-->
<apex:actionFunction name="sayHello" action="{!sayHello}" rerender="out" status="myStatus"/>
</apex:form>
<apex:outputPanel id="out">
<apex:outputText value="Hello "/>
<apex:actionStatus startText="requesting..." id="myStatus">
<apex:facet name="stop">{!username}</apex:facet>
</apex:actionStatus>
</apex:outputPanel>
<!-- Call the sayHello JavaScript function using a script element-->
<script>window.setTimeout(sayHello,2000)</script>
<p><apex:outputText value="Clicked? {!state}" id="showstate" /></p>
<!-- Add the onclick event listener to a panel. When clicked, the panel triggers
the methodOneInJavascript actionFunction with a param -->
<apex:outputPanel onclick="methodOneInJavascript('Yes!')" styleClass="btn">
Click Me
</apex:outputPanel>
<apex:form>
<apex:actionFunction action="{!methodOne}" name="methodOneInJavascript" rerender="showstate">
<apex:param name="firstParam" assignTo="{!state}" value="" />
</apex:actionFunction>
</apex:form>
</apex:page>
/*** Controller ***/
public class exampleCon {
String uname;
public String getUsername() {
return uname;
}
public PageReference sayHello() {
uname = UserInfo.getName();
return null;
}
public void setState(String n) {
state = n;
}
public String getState() {
return state;
}
public PageReference methodOne() {
return null;
}
private String state = 'no';
}
A component that provides support for invoking controller action methods directly from JavaScript code using an AJAX request. An <apex:actionFunction> component must be a child of an <apex:form> component.
<apex:page controller="exampleCon">
<!-- Add the onclick event listener to a panel. When clicked, the panel triggers
the methodOneInJavascript actionFunction with a param -->
<apex:outputPanel onclick="methodOneInJavascript('Yes!')" styleClass="btn">
Click Me
</apex:outputPanel>
<apex:form>
<apex:actionFunction action="{!methodOne}" name="methodOneInJavascript" rerender="showstate">
<apex:param name="firstParam" assignTo="{!state}" value="" />
</apex:actionFunction>
</apex:form>
</apex:page>
In the above visualforce page javascript method in the onclickevent will call the apex controller method with the help of actionfunction. Apex controller. With the help of actionfunction we can able to make a call to the apex controller class
/*** Controller ***/
public class exampleCon {
String uname;
public String getUsername() {
return uname;
}
public PageReference sayHello() {
uname = UserInfo.getName();
return null;
}
public void setState(String n) {
state = n;
}
public String getState() {
return state;
}
public PageReference methodOne() {
return null;
}
private String state = 'no';
}
Check other blog post link which might be helpful for you
Apex controller. With the help of actionfunction we can able to make a call to the apex controller class Check other blog post link which might be helpful for you
http://sfdcsrini.blogspot.com/2014/07/visualforce-action-function-example.html
http://www.salesforcetutorial.com/actionfunction-tag/
All Answers
A component that provides support for invoking controller action methods directly from JavaScript code using an AJAX request. An <apex:actionFunction> component must be a child of an <apex:form> component.
Example 1:-
Exmaple 2:-
http://sfdcsrini.blogspot.com/2014/07/visualforce-action-function-example.html
Eample 3:-
http://www.cloudforce4u.com/2013/06/actionfunction-in-apex.html
Please let us know if this will help u
Thanks
AMit Chaudhary
Apex controller. With the help of actionfunction we can able to make a call to the apex controller class Check other blog post link which might be helpful for you
http://sfdcsrini.blogspot.com/2014/07/visualforce-action-function-example.html
http://www.salesforcetutorial.com/actionfunction-tag/
https://developer.salesforce.com/forums/ForumsMain?id=906F0000000kCIYIA2
Thank You,
Sohel Mohd
https://www.sfdc-lightning.com/2018/09/action-support-in-salesforce.html
https://www.sfdc-lightning.com/2018/09/action-function-in-salesforce.html
The simplest way to understand <apex:actionFunction> is by watching the below video:
https://www.youtube.com/watch?v=VHIPL6kmWoc
Hope it helps :)