KitJs/temp/t.html at master · fujscss/KitJs · GitHub

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<html>
<link rel="stylesheet" href="a.css" />
</head>
<body>
	<div id="c" style="background-color: black">123</div>
	<script>
		//console.log(document.getElementById('c').offsetHeight);
		//document.getElementById('c').style.height = '1px';
		//console.log(document.getElementById('c').offsetHeight);
		//setTimeout(function() {
		//document.getElementById('c').style.height = 'auto';
		//console.log(document.getElementById('c').offsetHeight);
		//}, 0);
		function aa(b) {
			var d1 = new Date().getTime();
			b();
			var d2 = new Date().getTime();
			console.log((d2 - d1) / 1000);
		}
		/*
		c1 = new Date().getTime();
		setInterval(function() {
			c2 = new Date().getTime();
			console.log((c2 - c1) / 1000)
			c1 = c2;
			aa(function() {
				for ( var i = 0; i < 100000; i++) {
					console.log(1);
				}
			});

		}, 5000);
		*/
		c1 = new Date().getTime();
		setTimeout(function() {
			c2 = new Date().getTime();
			console.log((c2 - c1) / 1000)
			c1 = c2;
		}, 1000);
		aa(function() {
			for ( var i = 0; i < 100000; i++) {
				console.log(1);
			}
		});
	</script>
</body>
</html>