Tag Archives: Javascript

Custom Clone Button in Salesforce

Salesforce provides Clone functionality for some standard objects(Standard Clone button), However some standard objects do not have this button. For this purpose of cloning we will need to create custom button that will perform the functionality of cloning.

This cloning functionality can be achieved by writing a javascript for this custom button.

As an example lets create a custom button “Clone” on Account object that will clone the record.

Simply override your custom button “Clone” with the following javascript and you will have your custom Clone button that functions exactly like standard clone button

{!REQUIRESCRIPT("/soap/ajax/22.0/connection.js")} 
window.parent.location.href="/{!Account.Id}/e?&clone=1&retURL=/{!Account.Id}";

Note: retUrl specifies the location where you want to be on press of back button.

How to disable right click on visualforce page?

Sometimes we need to disable right click on visualforce page. Here in this article i will demonstrate how to disable right click on visualforce page using javascript.

Let’s take a simple example:
The below visualforce page is a simple entry page of “Student” custom object. Here the javascript method “RightClickDisabled”, disabled right click in form onmousedown event.

<apex:page standardcontroller="Student__c">
  <script>
      function RightClickDisabled(event){    
        if (event.button==2)
        {
            alert("Right click is not allowed");       
        }
      }
  </script>
  <apex:form onmousedown="RightClickDisabled(event)">
      <apex:pageblock title="Create Student">
          <apex:pageblockbuttons>
              <apex:commandbutton action="{!save}" value="Save">
          </apex:commandbutton></apex:pageblockbuttons>
          <apex:pageblocksection columns="1">
              <apex:inputfield value="{!Student__c.First_Name__c}">
              <apex:inputfield value="{!Student__c.Last_Name__c}">
              <apex:inputfield value="{!Student__c.Date_of_Birth__c}">
              <apex:inputfield value="{!Student__c.Address__c}">              
          </apex:inputfield></apex:inputfield></apex:inputfield></apex:inputfield></apex:pageblocksection>
      </apex:pageblock>
  </apex:form>
</apex:page>

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Calling Visualforce Page From Javascript

Visualforce page that calls another Visualforce page upon confirming from javascript.

Visualforce Page:

<apex:page standardController="Account">
    <apex:form>
        <apex:pageBlock>
            <apex:commandButton value="Open VF Page" onclick="OpenVFPage()"/>
        </apex:pageBlock>
    
    <script>
      function OpenVFPage(){
        var isConfirm = confirm('Do you want to open a new Visualforce Page?');
        if(isConfirm)
           window.open('/apex/YourVisualForcePage');
      }
     </script>
    </apex:form>
</apex:page>

Similarly, if you want to open a visualforce page from a custom button using javascript then use following piece of code.

{!REQUIRESCRIPT("/soap/ajax/22.0/connection.js")} 
var isConfirm = confirm('Do you want to open new Visualforce Page?');
if(isConfirm){
	window.parent.location.href="/apex/YourVisualforcePage";
}

How to Use Action Function in Visualforce Page?

ActionFunction is used to execute a method in your Apex Class from your Visualforce Page asynchronously via AJAX requests. Its easy to call a controller method using attribute action="{!YourMethodeName}". An component must be a child of an component. In this article I will demonstrate, how to use actionfunction in visualforce page.

Note: Beginning with API version 23 you can’t place apex:actionFunction inside an iteration component — apex:pageBlockTable, apex:repeat, and so on. Put the apex:actionFunction after the iteration component, and inside the iteration put a normal JavaScript function that calls it.

public with sharing class ActionFunctionTest
{
      public String ReturnValue {get;set;}
      public String FirstName {get;set;}
      public String LastName {get;set;}
    
      public void Result()
      {
          ReturnValue = 'My name is : ' + FirstName +' '+ LastName ;
      }
}

In above class, the variables “FirstName” and “LastName” are the parameters supplied by the javascript and variable “ReturnValue” will display the result.

<apex:page controller="ActionFunctionTest">
<apex:form id="TestFrm">
First Name : 
<apex:inputtext id="txtFirstName" required="true">
Last Name : 
<apex:inputtext id="txtLastName" required="true">
<span class="btn" onclick="return GetMyName()"> Get My Name </span>
<apex:outputpanel id="resultPanel">
<apex:actionstatus id="TestStatus" starttext="Processing..." stoptext="">
<b><apex:outputlabel value="{!ReturnValue}"></apex:outputlabel></b>
</apex:actionstatus></apex:outputpanel>
<apex:actionfunction action="{!Result}" name="TestAF" rerender="resultPanel" status="TestStatus">
<apex:param assignto="{!FirstName}" name="FirstParameter" value="">
<apex:param assignto="{!LastName}" name="SecondParameter" value="">
</apex:param></apex:param></apex:actionfunction>
</apex:inputtext></apex:inputtext></apex:form>
 
<script type="text/javascript">
function GetMyName()
{
var FirstNameValue = document.getElementById("{!$Component.TestFrm.txtFirstName}").value;
var LastNameValue = document.getElementById("{!$Component.TestFrm.txtLastName}").value;
if(FirstNameValue == '' || LastNameValue == '')
{
alert('Please enter your first name and last name');
return false;
}
TestAF(FirstNameValue ,LastNameValue );
return true;
}
</script>
</apex:page>

The below code is used to define the “actionFunction” in visual force page. To send the parameter, we have to use “apex:param” tag. Attribute “assignTo” will assign the parameter to variable name specified in Apex code. Here we have assigned the value to variable “FirstName” and “LastName”.

<apex:actionfunction action="{!Result}" name="TestAF" rerender="resultPanel" status="TestStatus">
<apex:param assignto="{!FirstName}" name="FirstParameter" value="">
<apex:param assignto="{!LastName}" name="SecondParameter" value="">
</apex:param></apex:param></apex:actionfunction>

The resulting JavaScript function created by the visualforce will be “TestAF” because we have set that name for the “apex:actionFunction”. Actionfunction’s attribute “action” will call the method “Result” which is specified in Apex class “ActionFunctionTest” and “status” will show the Ajax request status. Below JavaScript method is used to call the generated method by “apex:actionFunction”.

<script type="text/javascript">
  function GetMyName()
  {
   var FirstNameValue = document.getElementById("{!$Component.TestFrm.txtFirstName}").value;
   var LastNameValue = document.getElementById("{!$Component.TestFrm.txtLastName}").value;
   if(FirstNameValue == '' || LastNameValue == '')
   {
    alert('Please enter your first name and last name');
    return false;
   }
   TestAF(FirstNameValue ,LastNameValue );
   return true;
  }
 </script> 

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SOQL query in javascript

We can use SOQL in java-script on Visual Force pages or we can get it executed on click of a button or link present on detail page of a record. Below is the simple example of SOQL query in javascript on click of a button:
Javascript code:

{!REQUIRESCRIPT("/soap/ajax/24.0/connection.js")}
{!REQUIRESCRIPT("/soap/ajax/24.0/apex.js")}
try{
var query = "SELECT Id,Name from Contact LIMIT 1";
var result = sforce.connection.query(query);
var arrayResult = result.getArray('records'); 
 
if(arrayResult.length == 0){
alert('There is no Contact');
}
else{
var contactName = arrayResult[0].Name;
alert(contactName);
}
}
catch(e){
alert('An error has occured');
}