Javascript 使用AngularJS访问嵌套JSON
我正在尝试使用angular.js、hammer.js和topcoat制作和移动webapp 我在显示Json文件中的数据时遇到了一些问题,例如:Javascript 使用AngularJS访问嵌套JSON,javascript,json,angularjs,mobile,cordova,Javascript,Json,Angularjs,Mobile,Cordova,我正在尝试使用angular.js、hammer.js和topcoat制作和移动webapp 我在显示Json文件中的数据时遇到了一些问题,例如: { "version": "1", "artists": { "artist1": { "name": "artist1name", "jpeg": "../img/artist/artist1.jpg", "albums": { "album1": {
{
"version": "1",
"artists": {
"artist1": {
"name": "artist1name",
"jpeg": "../img/artist/artist1.jpg",
"albums": {
"album1": {
"type": "cd",
"title": "titlealbum1",
"subtitle": "subtitlealbum1",
"jpeg": "../img/album1.jpg",
"price": "12.00",
"anystring1": "anystring1album1",
"anystring2": "anystring2album1"
},
"album2": [{
"type": "cd",
"title": "titlealbum2",
"subtitle": "subtitlealbum2",
"jpeg": "../img/album2.jpg",
"price": "12.00",
"anystring1": "anystring1album2",
"anystring2": "anystring2album2"
}],
"album3": [{
"type": "cd",
"title": "titlealbum3",
"subtitle": "subtitlealbum3",
"jpeg": "../img/album3.jpg",
"price": "13.00",
"anystring1": "anystring1album3",
"anystring2": "anystring2album3"
}]
}
},
"artist2": {
"name": "artist2name",
"jpeg": "../img/artist/artist2.jpg",
{
"version": "1",
"artists": [
{
"name": "artist1name",
"jpeg": "../img/artist/artist1.jpg",
"albums": [
{
"type": "cd",
"title": "titlealbum1",
"subtitle": "subtitlealbum1",
"jpeg": "../img/album1.jpg",
"price": "12.00",
"anystring1": "anystring1album1",
"anystring2": "anystring2album1"
},
{
"type": "cd",
"title": "titlealbum2",
"subtitle": "subtitlealbum2",
"jpeg": "../img/album2.jpg",
"price": "12.00",
"anystring1": "anystring1album2",
"anystring2": "anystring2album2"
},
{
"type": "cd",
"title": "titlealbum3",
"subtitle": "subtitlealbum3",
"jpeg": "../img/album3.jpg",
"price": "13.00",
"anystring1": "anystring1album3",
"anystring2": "anystring2album3"
}
]
},
{
"name": "artist2name",
"jpeg": "../img/artist/artist2.jpg",
"albums": []
}
]
}
我的js文件如下所示:
angular.module('list', [])
function ListCtrl ($scope, $http) {
$http({method: 'GET', url: 'json/json_price_1.json'}).success(function(data)
{
$scope.artists = data.artists; // response data
$scope.albums = data.artists.albums; /this is where im getting trouble
});
};
<body ng-app="list">
<h3>Titulos</h3>
<div ng-controller="ListCtrl">
<ul ng-repeat="artist in artists">
<li >{{artist.name}}</li>
</ul>
</div>
<div ng-controller="ListCtrl">
<ul ng-repeat="album in albums">
<li >{{album.title}}</li> //not working here.
</ul>
</div>
$http({method: 'GET', url: 'json/json_price_1.json'}).success(function(data) {
$scope.artists = [];
angular.forEach(data.artists, function(value, key) {
$scope.artists.push(value);
});
$scope.isVisible = function(name){
return true;// return false to hide this artist's albums
};
});
我的HTML文件如下所示:
angular.module('list', [])
function ListCtrl ($scope, $http) {
$http({method: 'GET', url: 'json/json_price_1.json'}).success(function(data)
{
$scope.artists = data.artists; // response data
$scope.albums = data.artists.albums; /this is where im getting trouble
});
};
<body ng-app="list">
<h3>Titulos</h3>
<div ng-controller="ListCtrl">
<ul ng-repeat="artist in artists">
<li >{{artist.name}}</li>
</ul>
</div>
<div ng-controller="ListCtrl">
<ul ng-repeat="album in albums">
<li >{{album.title}}</li> //not working here.
</ul>
</div>
$http({method: 'GET', url: 'json/json_price_1.json'}).success(function(data) {
$scope.artists = [];
angular.forEach(data.artists, function(value, key) {
$scope.artists.push(value);
});
$scope.isVisible = function(name){
return true;// return false to hide this artist's albums
};
});
提托洛斯
- {{artist.name}
- {{album.title}
//不在这里工作。
我想显示所有相册,如果我的用户选择了特定的艺术家,我想过滤这些相册。
这里的问题是我将如何选择这个嵌套的json。顺便说一句,artist.name显示正确。
第二个问题是,我将如何使用文本字段过滤这些艺术家 我建议这样做:
angular.module('list', [])
function ListCtrl ($scope, $http) {
$http({method: 'GET', url: 'json/json_price_1.json'}).success(function(data)
{
$scope.artists = data.artists; // response data
$scope.albums = data.artists.albums; /this is where im getting trouble
});
};
<body ng-app="list">
<h3>Titulos</h3>
<div ng-controller="ListCtrl">
<ul ng-repeat="artist in artists">
<li >{{artist.name}}</li>
</ul>
</div>
<div ng-controller="ListCtrl">
<ul ng-repeat="album in albums">
<li >{{album.title}}</li> //not working here.
</ul>
</div>
$http({method: 'GET', url: 'json/json_price_1.json'}).success(function(data) {
$scope.artists = [];
angular.forEach(data.artists, function(value, key) {
$scope.artists.push(value);
});
$scope.isVisible = function(name){
return true;// return false to hide this artist's albums
};
});
然后:
<div ng-controller="ListCtrl">
<ul>
<li ng-repeat="artist in artists">{{artist.name}}</li>
</ul>
<ul ng-repeat="artist in artists" ng-show="isVisible(artist.name)">
<li ng-repeat="album in artist.albums">{{album.title}}</li>
</ul>
</div>
- {{artist.name}
- {{album.title}
检查
回答您的问题“我将如何选择此嵌套json?”
回答您的问题“如何使用文本字段过滤这些艺术家?”
- {{album.title}
所有问题都是从JSON开始的。我建议您简化JSON,并将每个Artist
和Album
作为对象,将Artists
和Albums
作为对象数组
试试这个:
{
"version": "1",
"artists": {
"artist1": {
"name": "artist1name",
"jpeg": "../img/artist/artist1.jpg",
"albums": {
"album1": {
"type": "cd",
"title": "titlealbum1",
"subtitle": "subtitlealbum1",
"jpeg": "../img/album1.jpg",
"price": "12.00",
"anystring1": "anystring1album1",
"anystring2": "anystring2album1"
},
"album2": [{
"type": "cd",
"title": "titlealbum2",
"subtitle": "subtitlealbum2",
"jpeg": "../img/album2.jpg",
"price": "12.00",
"anystring1": "anystring1album2",
"anystring2": "anystring2album2"
}],
"album3": [{
"type": "cd",
"title": "titlealbum3",
"subtitle": "subtitlealbum3",
"jpeg": "../img/album3.jpg",
"price": "13.00",
"anystring1": "anystring1album3",
"anystring2": "anystring2album3"
}]
}
},
"artist2": {
"name": "artist2name",
"jpeg": "../img/artist/artist2.jpg",
{
"version": "1",
"artists": [
{
"name": "artist1name",
"jpeg": "../img/artist/artist1.jpg",
"albums": [
{
"type": "cd",
"title": "titlealbum1",
"subtitle": "subtitlealbum1",
"jpeg": "../img/album1.jpg",
"price": "12.00",
"anystring1": "anystring1album1",
"anystring2": "anystring2album1"
},
{
"type": "cd",
"title": "titlealbum2",
"subtitle": "subtitlealbum2",
"jpeg": "../img/album2.jpg",
"price": "12.00",
"anystring1": "anystring1album2",
"anystring2": "anystring2album2"
},
{
"type": "cd",
"title": "titlealbum3",
"subtitle": "subtitlealbum3",
"jpeg": "../img/album3.jpg",
"price": "13.00",
"anystring1": "anystring1album3",
"anystring2": "anystring2album3"
}
]
},
{
"name": "artist2name",
"jpeg": "../img/artist/artist2.jpg",
"albums": []
}
]
}
在我的示例中,数组可以是空的(artist2没有分配唱片集)
您的列表Ctrl
中也有错误的提示,在您知道正确的艺术家之前,您无法分配和显示相册。如果你想展示所有艺术家的所有专辑,你需要遍历所有艺术家
控制器示例:
angular.module('list', []);
function ListCtrl($scope, $http) {
$http({
method: 'GET',
url: 'json_price_1.json'
}).success(function(data) {
$scope.artists = data.artists; // response data
$scope.albums = [];
angular.forEach(data.artists, function(artist, index) {
angular.forEach(artist.albums, function(album, index){
$scope.albums.push(album);
});
});
});
}
下面是基于jessie示例修改的Plunkr:
-
{{artist.name}}
- {{key}}-{{val}
在哪里生成json?相册中的模式不一致。第一张相册中没有数组,其他两张相册中有数组。在将数据传递到我生成的文件之前,必须重新映射数据。但是php脚本将在以后生成它。每次我使用JsonLint来验证我的Json,所以请忽略这个错误。谢谢json的结构远远不够理想。这不是关于是否有效…而是应该使用对象数组…这将使设置Angular变得更容易。非常感谢!你的例子很有启发性。我在这方面很新手,你的回答太棒了!