User:Erutuon/scripts/familyTree.js

// Change the text in the custom toggles generated by ].
$(function () {
	$('.mw-collapsible').on('beforeExpand.mw-collapsible beforeCollapse.mw-collapsible',
    function (event) {
        if (this.id.indexOf("mw-customcollapsible-familytree") === 0) {
            const toggle = $("." + this.id.replace("mw-customcollapsible", "mw-customtoggle"));
            if (event.type === "beforeExpand") {
                toggle.html(this.dataset.collapsetext);
            } else { // beforeCollapse
                toggle.html(this.dataset.expandtext);
            }
            event.stopPropagation();
        }
    });
});