1.在 AngularJS 中我們可以使用 ng-option 指令來創建一個下拉列表，列表項通過對象和數組循環輸出
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>選擇框Select</title>
<script src="angular-1.4.1/angular.min.js"></script>
</head>
<body>
<div ng-app="myApp" ng-controller="myCtrl">
<select ng-model="selectedName" ng-options="x for x in names">
</select>
</div>
<script>
var app = angular.module('myApp',[]);
app.controller('myCtrl',function($scope){
$scope.names = ["谷歌","百度","搜狗"];
});
</script>
</body>
</html>
運行結果:
用ng-option加載列表：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>選擇框Select</title>
<script src="angular-1.4.1/angular.min.js"></script>
<script>
var app = angular.module('myApp', []);
app.controller('customersCtrl', function($scope) {
$scope.sites = [
{site:"谷歌",url:"http:www.google.com"},
{site:"百度",url:"http:www.baidu.com"},
{site:"搜狗",url:"http:www.sogou.com"}
];
});
</script>
</head>
<body>
<div ng-app="myApp" ng-controller="customersCtrl">
<select ng-model="selectedSite" ng-options="x.site for x in sites">
</select>
<h1>你選擇的內容如下:</h1>
<p>名字:{{selectedSite.site}}</p>
<p>網址為:{{selectedSite.url}}</p>
</div>
</body>
</html>
運行結果：
用ng-repeat加載列表數據也可以但是有局限性，選擇的是一個字符串：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>選擇框Select</title>
<script src="angular-1.4.1/angular.min.js"></script>
<script>
var app = angular.module('myApp', []);
app.controller('customersCtrl', function($scope) {
$scope.sites = [
{site:"谷歌",url:"http:www.google.com"},
{site:"百度",url:"http:www.baidu.com"},
{site:"搜狗",url:"http:www.sogou.com"}
];
});
</script>
</head>
<body>
<div ng-app="myApp" ng-controller="customersCtrl">
<select ng-model="selectedSite">
<option ng-repeat="x in sites" value="{{x.url}}">{{x.site}}</option>
</select>
<h1>你選擇的內容是:{{selectedSite}}</h1>
</div>
</body>
</html>
運行結果：
ng-options使用對象有很大的不同，使用對象作為數據源, x 為鍵(key), y 為值(value),select控件ng-options表示控件的值是什么，然后ng-model綁定了數據對應的數據源：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>選擇框Select</title>
<script src="angular-1.4.1/angular.min.js"></script>
<script>
var app = angular.module('myApp', []);
app.controller('customersCtrl', function($scope) {
$scope.sites = {
site01 : "Google",
site02 : "Runoob",
site03 : "Taobao"
};
});
</script>
</head>
<body>
<div ng-app="myApp" ng-controller="customersCtrl">
<select ng-model="selectedSite" ng-options="x for (x, y) in sites">
</select>
你選擇的是:{{selectedSite}}
</div>
</body>
</html>
運行結果 你選擇的值為在 key-value 對中的 value。
此外value 在 key-value 對中也可以是個對象：選擇的值在 key-value 對的 value 中, 這是它是一個對象:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>選擇框Select</title>
<script src="angular-1.4.1/angular.min.js"></script>
<script>
var app = angular.module('myApp', []);
app.controller('customersCtrl', function($scope) {
$scope.cars = {
car01 : {brand : "Ford", model : "Mustang", color : "red"},
car02 : {brand : "Fiat", model : "500", color : "white"},
car03 : {brand : "Volvo", model : "XC90", color : "black"}
};
});
</script>
</head>
<body>
<div ng-app="myApp" ng-controller="customersCtrl">
<select ng-model="selectedCar" ng-options="y.brand for (x, y) in cars">
</select>
你選擇的是:{{selectedCar}}
</div>
</body>
</html>
運行結果：
