jsCircles/demo.html at master · eboppel/jsCircles · GitHub

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<html>
<head>
	<title>Javascript Box - OOP demo</title>
</head>
<body>

	Demonstrating how you can detect how long your mouse was clicked or held down.  Open your console to see how it works.

	<script>
	//using immediate function to avoid global variable issues
	( function(){

		var mousedown_time;

		function getTime(){
			var date = new Date();
			return date.getTime();
		}

		document.onmousedown = function(e){
			mousedown_time = getTime();
		}
		document.onmouseup = function(e){
			time_pressed = getTime() - mousedown_time;
			console.log('You held your mouse down for', time_pressed, 'miliseconds.');
		}

		//technically we don't even need the mousedown variable but we're leaving it there for now..

	})();

	</script>

</body>
</html>