Get all Facebook friends' names from friends page

paste-this-into-console.js

scrollToBottomOfPage = {
	// Configurable properties
	interval: 1000,
	allowedIntervalsInSamePosition: 10,
	// Non-configurable properties
	intervalContainer: null,
	currentPosition: 0,
	intervalsInSamePosition: 0,
	callbackWhenFinished: function(){
	   console.log('No callback set on finish')
	},
	scroll: function(){
		let currentPosition = document.body.offsetHeight;
		window.scrollTo(0, currentPosition);
		if (currentPosition ==  this.currentPosition){
			this.intervalsInSamePosition++;
			if(this.intervalsInSamePosition >= this.allowedIntervalsInSamePosition){
				console.log('stop');
				this.stop();
				this.callbackWhenFinished();
			}
		} else {
			this.currentPosition = currentPosition;
			this.intervalsInSamePosition = 0;
		}
		console.log('Intervals in same position: ' + this.intervalsInSamePosition + ' out of ' + this.allowedIntervalsInSamePosition);
    },
	start: function(callbackWhenFinished = null){
		if (callbackWhenFinished) {
			this.callbackWhenFinished = callbackWhenFinished
        }
		intervalContainer = setInterval(this.scroll.bind(this), this.interval);
    },
	stop: function(){
		clearInterval(intervalContainer);
    }
}

function getFriends(){
	let friends = document.querySelectorAll('.uiProfileBlockContent .fsl.fwb.fcb a');
	let friendNames = [];
	friends.forEach(function (element){
		friendNames.push(element.innerHTML)
	});
	console.log(friendNames.sort().join('\n'));
}

scrollToBottomOfPage.start(getFriends);