I a javascript class i wrote i use a specific dynamically loaded version of JQuery (version 3.2.1). I use that dynamiclly loaded version in compatibilty mode.

I am not suere if selector "generated" in compatibilty mode and passed as argument to a function, will also use the compatibility mode (my own version instead of the original one).

Here the code :

function toggleFunction ( jQuerySelectorItem )
{
    //hide all
    $jq_321(".class").hide();
    
    var checkBoxes = $jq_321(".class[rel-data='" + jQuerySelectorItem.attr("rel-data") + "'] input"); // <<<<< is this 'jQuerySelectorItem' still use jQuery 3.2.1 if generated by '$jq_321' selector ?

    if (jQuerySelectorItem.is(":checked")) 
    {
        checkBoxes.toArray().forEach ( item => this.__changeDependantCheckBoxStatus(item, true));
    } 
    else 
    {
        checkBoxes.toArray().forEach ( item => this.__changeDependantCheckBoxStatus(item, false));
    }
    
    $jq_321(".class[rel-data='" + jQuerySelectorItem.attr("rel-data") + "']").show();
}

Here is how i dynamically load the correct version of JQuery in compatibilty mode before using it :

window.onload = (event) => {
    var jqScriptTag = document.createElement("script");
    jqScriptTag.src = 'https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js';

    jqScriptTag.onload = function() {
        console.log('Temporary jQuery version : ' + jQuery.fn.jquery);
        $jq_321 = jQuery.noConflict(true);

        console.log('Restored original jQuery version : ' + jQuery.fn.jquery);
        //other code that will indeed call toggleFunction when needed
    };

    document.head.appendChild(jqScriptTag);
};

Here the console log :

Temporary jQuery version : 3.2.1

Restored original jQuery version : 1.4.2