angular表达式几种形式
1、{{ }}
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<script src="https://cdn.bootcss.com/angular.js/1.6.6/angular.min.js"></script>
</head>
<body>
<div ng-app="">
{{5+5}}
</div>
</body>
</html>
10
2、表达式中的字符串
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<script src="https://cdn.bootcss.com/angular.js/1.6.6/angular.min.js"></script>
</head>
<body>
<div ng-app="" ng-init="firstName='zhang';lastName='hao'">
{{firstName+''+lastName}}
</div>
</body>
</html>
zhanghao
3、表达式中的对象
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<script src="https://cdn.bootcss.com/angular.js/1.6.6/angular.min.js"></script>
</head>
<body>
<div ng-app="" ng-init="personal={firstName:'zhang',lastName:'hao'}">
{{personal.lastName}}
</div>
</body>
</html>
hao
4、表达式中的数组
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<script src="https://cdn.bootcss.com/angular.js/1.6.6/angular.min.js"></script>
</head>
<body>
<div ng-app="" ng-init="personal=[1,2,3,4,5]">
{{personal[3]}}
</div>
</body>
</html>
4