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67-find方法介绍.html

<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>find方法</title>
</head>
<body>
	<script type="text/javascript">

		//查找数组中id为XX的值，有则返回对应对象属性，没有则返回undefined
		var ary = [{
			id: 1,
			name: '张三'
		}, {
			id: 2,
			name: '李四'
		}];
		let target = ary.find(item => item.id == 2);
		console.log(target);

		var arr = [{
			id: 1,
			name: "张三"
		}, {
			id: 2,
			name: "李四"
		}];
		let target1 = arr.find(item => item.id == 3);
		console.log(target1);
	</script>
</body>
</html>