我在角度JS中选择的默认选择
[英]A default choice in my select in angular JS
问题描述
我正在使用AngularJS创建一个简单的应用程序Web。
我想在我的选择中将城市A的值显示为默认选项。
的index.html
<body ng-controller="MainCtrl">
<select ng-model="selectedCity" ng-change="extractSubsities(selectedCity)" ng-options="item as item.name for item in cities track by item.name">
</select>
<select ng-show="selectedCity.subsities" ng-model="selectedSubCity" ng-change="extractSubsities(selectedSubCity)" ng-options="item2 as item2.name for item2 in selectedCity.subsities track by item2.name">
<option style="" value=""></option>
</select>
<table>
<tr ng-repeat="item3 in data track by item3.id">
<td>{{ item3.id }}</td>
<td>{{ item3.name }}</td>
<td>{{ item3.price }}</td>
</tr>
</table>
</body>
</html>
这是我的脚本js ：
var app = angular.module('plunker', []);
app.controller('MainCtrl', function($scope) {
$scope.name = 'World';
$scope.cities = [
{
name: "city A",
elements: [{
id: 'c01',
name: 'name1',
price: 15
}, {
id: 'c02',
name: 'name2',
price: 18
}, {
id: 'c03',
name: 'name3',
price: 11
}],
subsities: [ {
name: "sub A1",
elements: [{
id: 'sub01',
name: 'nameSub1',
price: 1
}, {
id: 'sub02',
name: 'nameSub2',
price: 8
}, {
id: 'sub03',
name: 'nameSub3',
price: 1
} ]
},
{
name: "sub A2",
elements: [{
id: 'ssub01',
name: 'nameSsub1',
price: 1
}, {
id: 'ssub02',
name: 'nameSsub2',
price: 8
}, {
id: 'ssub03',
name: 'nameSsub3',
price: 4
} ]
},
{
name: "sub A3",
elements: [{
id: 'sssub01',
name: 'nameSssub1',
price: 1
}, {
id: 'sssub02',
name: 'nameSssub2',
price: 2
}, {
id: 'sssub03',
name: 'nameSssub3',
price: 1
}]
}
]
},
{
name: "city B",
elements: [{
id: 'cc01',
name: 'name11',
price: 10
}, {
id: 'cc02',
name: 'name22',
price: 14
}, {
id: 'cc03',
name: 'name33',
price: 11
} ]
},
{
name: "city C",
elements: [{
id: 'ccc01',
name: 'name111',
price: 19
}, {
id: 'ccc02',
name: 'name222',
price: 18
}, {
id: 'ccc03',
name: 'name333',
price: 10
} ]
}
];
$scope.extractSubsities = function(itemSelected) {
if(itemSelected && itemSelected.elements){
$scope.data = itemSelected.elements;
}
}
});
我需要将城市A显示为默认选择值我该如何解决这个问题？
3 个解决方案
解决方案1
1 2016-04-18 14:19:13
您可以在页面完成加载之前通过将此行添加到控制器来设置所选城市。
像这样的东西：
$scope.selectedCity = $scope.cities[0].name;
解决方案2
1 2016-04-18 14:20:07
只需将selectedSubCity指定为默认值：
$scope.selectedSubCity = $scope.cities[0];
同时调用extractSubsities：
$scope.extractSubsities();
解决方案3
1 已采纳 2016-04-18 15:07:08
我在angular JS中选择的默认选择并删除两个单词之间的下划线
[英]A default choice in my select in angular JS and delete underscore between two words
声明:本站的技术帖子网页，遵循CC BY-SA 4.0协议，如果您需要转载，请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.