Calling a Apex controller method using JavaScript in VF page

Question

Hi can anybody guide me how to call a method in controller from a VF page.

Mohith Kumar · Answer 1 · 2012-11-29 13:33:42Z

There are two methods to do this :

1)Use @Remote Action Call to call the method

2)Use ACtion Function and call on the event

Here are the documentations for the same

Video of demo sessions

Summary :Use actionfunction if you need to maintain state between postbacks, remoteaction for stateless invocations

Use actionfunction if you need to maintain state between postbacks, remoteaction for stateless invocations.

mast0r · Answer 2 · 2012-11-29 12:17:45Z

Apex method:

public PageReference getMyMethod(){
    ....
    return null;
}

Visualforce page action function:

<apex:actionFunction action="{!MyMethod}" name="myFunction" />

actionFunction works like a javascript function, so you can call it from anywhere at your page like this:

<apex:inputField value="{!something}" onchange="myFunction()" />

2 Answers