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ObjectDefineProperty.html

<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style>
			.aa{
				width:100px;
				height:30px;
				background:red;
				cursor:url("gg.png") 4 12,auto;
			}
		</style>
	</head>
	<body>
		<div class='aa'></div>
		<script>
			const target = { a: 1, b: 2 };
			const source = { b: 4, c: 5 };
			const returnedTarget = Object.assign(target, source);
			console.log(target);
			console.log(returnedTarget);
			console.log(source);
		</script>
	</body>
</html>