在visualforce中从javascript调用控制器方法

如何在没有任何onclick事件发生的情况下从VisualForce页面调用控制器方法？
我的VisualForce页面就像

<apex:page standardController="Account"> 

    <script>
     /* Here i need to call a controller class with out any onclick event. It should load by itselef */

    </script>

</apex:page>

我的控制器类就像

public class OrderPadController {
    /* this will be the constructor */

    public PageReference openPage() {
         PageReference newpage = new Pagereference('/apex'+'/pagetoopen'+'?aid='+a.id); 
         openorderpadembed.setRedirect(false); 
         return openorderpadembed;      
    }

从我的VisualForce页面,我需要调用openPage()方法.

请帮帮我

解决方法:

您可以通过以下方式使用JavaScript Remoting for Apex Controllers：

<apex:page standardController="Account" extensions="OrderPadController">
    <script src="//ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
    <script>
      window.$j = jQuery.noConflict();
      $j( document ).ready(function() {
        OrderPadController.openPage(function(result, event){

            console.log(result);
            window.open(result,"_self");

        });
      });

    </script>
</apex:page>

public class OrderPadController {
    //

    @remoteAction
    public  PageReference openPage() {
        PageReference newpage = NEW Pagereference('/apex' + '/pagetoopen' + '?aid=' + a.id);
        openorderpadembed.setRedirect(false);
        return openorderpadembed;
    }
}

标签：javascript,salesforce,visualforce
来源： https://codeday.me/bug/20190831/1773628.html