MediaWiki:Common.js

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/* Any JavaScript here will be loaded for all users on every page load. */

mw.loader.using(['mediawiki.util']).then(function () {
    document.addEventListener("DOMContentLoaded", function () {
        // Ensure this runs only on specific pages
        if (mw.config.get('wgPageName') === 'YourTargetPage') {
            var stepsHeader = document.querySelector("h2 > span#Steps");
            if (stepsHeader) {
                var orderedList = stepsHeader.parentElement.nextElementSibling;
                if (orderedList && orderedList.tagName === "OL") {
                    var listItems = orderedList.querySelectorAll("li");
                    for (var i = 0; i < listItems.length; i++) {
                        var listItem = listItems[i];
                        var text = listItem.textContent.trim();
                        var firstSentenceEnd = text.indexOf(".") + 1;
                        if (firstSentenceEnd > 0) {
                            var firstSentence = text.slice(0, firstSentenceEnd);
                            var restOfText = text.slice(firstSentenceEnd).trim();
                            listItem.innerHTML = "<strong>" + firstSentence + "</strong> " + restOfText;
                        }
                    }
                }
            }
        }
    });
});