function invokeClick(element){
    var clickEvent = new MouseEvent("click", {
        "view": window,
        "bubbles": true,
        "cancelable": false
    });

    var isCancelled = element.dispatchEvent(clickEvent);
    console.log(isCancelled);
}

// expand first comment list on the page
var showMoreLink = document.querySelector(".js-show-link:not(.dno)");
if(showMoreLink) invokeClick(showMoreLink);