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AngularJS之ng-if指令

时间:2021-07-01 10:21:17 帮助过:3人阅读

1、问题背景

AngularJS利用ng-if指令来判断对象元素是否为空


2、实现源码

<!DOCTYPE html>
<html ng-app="ifApp">
	<head>
		<meta charset="UTF-8">
		<title>AngularJS之ng-if指令</title>
		<script src="http://apps.bdimg.com/libs/angular.js/1.4.6/angular.min.js"></script>
		<script>
			var app = angular.module("ifApp",[]);
			app.controller("ifController",function($scope){
				$scope.person = {
					name:{
						username:"张三",
						sex:"男",
						age:"23"
					},
					scores:{
						item:"语文",score:"123"
					}
				};
			});
		</script>
	</head>
	<body ng-controller="ifController">
		<p ng-if="person != null">
			<p ng-repeat="p in person">
				<p ng-if="person.name != null">
					<label>{{p.username}}</label>
				</p>
			</p>
		</p>
	</body>
</html>


3、实现结果

1169.png

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