script to get that big emoji every time in facebook messenger

maxmoji.js

var likeButton = document.querySelectorAll('[title="Send a Like"]')[0];

function triggerHugeLike(targetNode, mouseUpDelay) {
	triggerMouseEvent(targetNode, "mousedown");
	window.setTimeout(function() {
		triggerMouseEvent(targetNode, "mouseup")
	}, mouseUpDelay);
}

function triggerMouseEvent(node, eventType) {
    var clickEvent = document.createEvent('MouseEvent');
    clickEvent.initEvent(eventType, true, true);
    node.dispatchEvent(clickEvent);
}

triggerHugeLike(likeButton, 2750);