[SalesForce] Load and execute Javascript on the fly (Stored in static resources some other place) with SFDC Buttons on layout

Use Case – There is Javascript execute button on Account page layout named 'Update Account' –

{!REQUIRESCRIPT("/soap/ajax/25.0/connection.js")}
{!REQUIRESCRIPT("/soap/ajax/25.0/apex.js")}

//JSsript code which updates account based on some logic 
...
..
//40 or 50 lines of Code

Problem with above button is it loads all this Javascript on every account pageview and kindof slows down each page view.
what if we have 2 or more buttons then again its more time to load. Is there any way we can store Javascript in static resources and then load it only when user clicks button and then execute it ?

Note: I already know that you can Create Apex Webservice method and then call it from JS but wanted to check if there is any alternate way to do this.

Best Answer

Each of your custom buttons could be written as so, letting 'RequireScript' determine whether your static resource script has already been loaded into the page (by another button).

If you can abstract the functions into a static resource file, the resource will only be loaded once and the button action can then call the function defined within the static resource.

{!REQUIRESCRIPT("/soap/ajax/25.0/connection.js")}
{!REQUIRESCRIPT("/soap/ajax/25.0/apex.js")}

{!REQUIRESCRIPT("/resource/YourStaticResourceJSFileName")}

//JSsript code which updates account based on some logic 
callYourFunctionDefinedInTheResource(arguments);

Here is a bit more info about the anti-caching number contained within the static resource URL path. Using static resources with Salesforce custom Javascript buttons

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[SalesForce] How to send Mass Email from List View in Contact Or Lead using custom button

Assuming you have this button on a related list/list view, you can use the {!GETRECORDIDS} javascript function to get the list/array of id of the selected records. You can then send this array to your apex class and then query the email field to get the email. YOu can do something like this:

{!REQUIRESCRIPT("/soap/ajax/28.0/connection.js")}
{!REQUIRESCRIPT("/soap/ajax/28.0/apex.js")}
var recordIdArray = {!GETRECORDIDS($ObjectType.Contact)};
console.log('the record Ids are' + recordIdArray);
var retStr = sforce.apex.execute("outbound_Emails", "SendEmailNotification",{conId: recordIdArray});

global class outbound_Emails{
        webservice static void SendEmailNotification (list<id> conId){
            list<contact> conList = [SELECT name,email FROM contact WHERE id IN : conId];
            system.debug('the selected contacts are  ' + conList);
            //you can iterate over this list to get the email and send the mail
        }
}

[SalesForce] Using static resources in OnClick Javascript buttons after “Serve Static Resources from force.com domain” critical update

I've raised a similar questions some time ago when I first saw that critical update:

Critical Update "Serve Static Resources from the Visualforce Domain" still serves resources via Salesforce Domain

What I got there was, that the critical update has had no impact since SF was doing a 302 redirect. In other words: turning it ON or OFF made absolutely no difference for me. The resources has been served and loaded without error.

Still I'm using Resources at several places this way and I can only confirm they are working today.

enter image description here

Also I can confirm that the Critical Update is no longer visible.

Why can't I see this Critical Update?

The Updates are only visible in a specific timeframe in which you can turn them on and off. This is very selective only to Orgs to which these updates apply and only if Salesforce decides to show them. Usually once enabled stuff from the past will disappear after that timeframe and can't be manipulated anymore.

Best Answer

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[SalesForce] Using static resources in OnClick Javascript buttons after “Serve Static Resources from force.com domain” critical update

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