What is the method of accessing a function external to an extended function?

I came across this code snippet

(function ($) {
    $.fn.CustomFunction = function (containerId) {
        let container = document.getElementById(containerId);
        let allFields = container.querySelectorAll("[is-required]");
        
        // More code here....
        
        function AdditionalFunction() {
            // Perform actions
        }
    }
}(jQuery));

To use the CustomFunction, I simply call it like so:

$(this).CustomFunction("container");

The challenge I'm facing is accessing the AdditionalFunction() method. I need to trigger it upon a button click event in order to view the generated errorList obtained from other parts of the CustomFunction.

One way I thought of doing this was by passing another id for a button and binding an event to it to access the errorList. However, I am open to exploring alternative methods to access the AdditionalFunction directly.

I have attempted...

Answer №1

Uncertain of the outcome of Val_Rev2 function, but it appears that PrintErrorSummary requires variables defined within Val_Rev2 to produce output.

To achieve this, consider implementing the following code snippet:

(function ($) {
$.fn.Val_Rev2 = function (containerId) {
    let container = document.getElementById(containerId);
    let allFields = container.querySelectorAll("[is-required]");
    let errorList = [];

    // Additional code goes here....
    
    function PrintErrorSummary() {
        // Perform necessary actions
    }

    return {
         PrintErrorSummary: PrintErrorSummary,
         // Other functionalities can be added if required
    }
}
}(jQuery));

You can invoke the function as demonstrated below:

$(this).Val_Rev2("container").printErrorSummary();

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