FacebookUserOnlineTime.js

//FacebookUserOnlineTime Shows info about when a specific user was online 
//Visit https://www.messenger.com/t/USERNAME
//and run the following code in tour console 


var prev = null
setInterval(function() {
	var userName = document.getElementById('js_5') .getElementsByTagName('span')[0].innerHTML;

	var statusText = document.getElementsByClassName("_2v6o");
	for (var i = 0; i < statusText.length; i++) {
	  var statusInfo = statusText[i].innerText;
	}

	if (statusInfo != prev){
		console.log(userName + ", " + Date().toLocaleString()+ ", " + statusInfo);
	}
	prev = statusInfo
}, 1000);