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javascript - Angular JS/IONIC 读取 JSON 文件

转载 作者:行者123 更新时间:2023-11-29 21:38:21 25 4
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您好,我有一个调用 Yahoo! 的 angular js/ionic 项目。返回以下 json 的金融网络服务。我试图在我的 index.html 上显示它但是它无法呈现 JSON 数据我如何在我的 Angular 中引用以从 JSON 中提取“价格”:“34.849998”?

我尝试使用无效的 {{fiveDay.list[0].meta[0].type}} 进行拉取

index.html(

{{fiveDay.list[0].meta[0].type}}

是我需要适当的 JSON 引用的地方)

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>


<!DOCTYPE html>
<html ng-app="starter">
<head>
<meta charset="utf-8">
<meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no, width=device-width">
<title></title>
<link href="lib/ionic/css/ionic.css" rel="stylesheet">
<link href="css/style.css" rel="stylesheet">
<!-- IF using Sass (run gulp sass first), then uncomment below and remove the CSS includes above
<link href="css/ionic.app.css" rel="stylesheet">
-->
<!-- ionic/angularjs js -->
<script src="lib/ionic/js/ionic.bundle.js"></script>

<!-- cordova script (this will be a 404 during development) -->
<script src="cordova.js"></script>
<!-- your app's js -->
<script src="js/app.js"></script>




</head>
</h1>
<body >


<ion-pane>
<ion-header-bar class="bar-dark">
<h1 class="title">Stock Profit Calculator</h1>
</ion-header-bar>
<ion-content>
<div class="list" ng-controller="MainController">
<label class="item item-input item-stacked-label">
<b> <span class="input-label">Ticker Symbol:</span> </b>
<input type="text" ng-model="ticker">
</label>
<p>{{fiveDay.list.resources[0].resource.fields.price}}</p>

<br>
<label class="item item-input item-stacked-label">
<b> <span class="input-label">Allotment:</span></b>
<input type="text" placeholder="0.00">
</label>


</ion-content>
</ion-pane>
</body>
</html>

应用程序.js:

// Ionic Starter App

// angular.module is a global place for creating, registering and retrieving Angular modules
// 'starter' is the name of this angular module example (also set in a <body> attribute in index.html)
// the 2nd parameter is an array of 'requires'
var app = angular.module('starter', ['ionic'])

.run(function($ionicPlatform) {
$ionicPlatform.ready(function() {
// Hide the accessory bar by default (remove this to show the accessory bar above the keyboard
// for form inputs)
if(window.cordova && window.cordova.plugins.Keyboard) {
cordova.plugins.Keyboard.hideKeyboardAccessoryBar(true);
}
if(window.StatusBar) {
StatusBar.styleDefault();
}
});
})

app.controller('MainController', ['$scope', 'stocks', function($scope, stocks) {
//$scope.ticker = 'Bad Guy KUTA';
stocks.success(function(data) {
$scope.fiveDay = data;
});



}]);


app.factory('stocks', ['$http', function($http) {
return $http.get('http://finance.yahoo.com/webservice/v1/symbols/YHOO/quote?format=json')
.success(function(data) {
return data;
})
.error(function(err) {
return err;
});
}]);

我尝试读取的 JSON 文件如下:

{
"list" : {
"meta" : {
"type" : "resource-list",
"start" : 0,
"count" : 1
},
"resources" : [
{
"resource" : {
"classname" : "Quote",
"fields" : {
"name" : "Yahoo! Inc.",
"price" : "34.849998",
"symbol" : "YHOO",
"ts" : "1449608400",
"type" : "equity",
"utctime" : "2015-12-08T21:00:00+0000",
"volume" : "19852579"
}
}
}

]
}
}

最佳答案

你正在调用 .success() 两次:

return $http.get('http://finance.yahoo.com/webservice/v1/symbols/YHOO/quote?format=json') 
.success(function(data) {
return data;
})
...
stocks.success(function(data) {
$scope.stockVariable = data;
});

我建议简单地退回你们工厂的 promise :

return $http.get('...');

...
stocks.then(function(data) { $scope.stockVariable = data; });

编辑:

listmeta 都不是数组:

{
"list":{
"meta":{
"type":"resource-list",
"start":0,
"count":1
},
"resources":[
{
"resource":{
"classname":"Quote",
"fields":{
"name":"Yahoo! Inc.",
"price":"34.849998",
"symbol":"YHOO",
"ts":"1449608400",
"type":"equity",
"utctime":"2015-12-08T21:00:00+0000",
"volume":"19852579"
}
}
}
]
}
}

只有带方括号的值才是数组,也就是说只有resources是数组。因此,要访问 price,您需要执行以下操作:

$scope.prices = fiveDay.list.resources
.map(function(item) {
return item.resource.fields.price;
});

或者,如果您真的只得到一个:

$scope.price = fiveDay.list.resources[0].resource.fields.price;

关于javascript - Angular JS/IONIC 读取 JSON 文件,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/34169258/

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