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JavaScriptLearning
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this指向.html

<!DOCTYPE html>
<html>

	<head>
		<meta charset="UTF-8">
		<title></title>
	</head>

	<body>
		<script type="text/javascript">
			function foo() {
				console.log(this.a)
			}

			function active(fn) {
				fn()
			}
			var a = 20;
			var obj = {
				a: 10,
				getA: foo,
				active: active
			}
			active(obj.getA) // 20
			obj.active(obj.getA) // 20
		</script>
	</body>

</html>