控制器:
$scope.send_index = function(event, val){
console.log(val);
$scope.variable = 'vm.areas['+val+'].name';
console.log( $scope.variable );
};
这是在视图中:
<select ng-model="vm.areas">
<option ng-repeat="area in vm.areas" ng-value="area" id="{{area}}" ng-click="send_index($event, $index)">{{area.name}}
</select>
<input value="{{variable}}">
其中“vm”是我的模型。
表达式内的表达式(Angular)
我的问题是我需要一个 {{array[]}},索引作为另一个表达式,
例如:{{Array[{{val}}]}}。
已经尝试过这个:
$scope.variable = ''+'vm.areas['+val+'].name'+'';
问题出在视图中,“变量”显示为字符串
(vm.areas[0].name)
它没有得到该查询的价值。
This is NOT正确的使用方法ng-model
with a <select>
AngularJS 中的元素:
<!-- ERRONEOUS
<select ng-model="vm.areas">
<option ng-repeat="area in vm.areas" ng-value="area" id="{{area}}" ng-click="send_index($event, $index)">{{area.name}}
</select>
<input value="{{variable}}">
-->
无需使用ng-click
指示。这选择指令 https://docs.angularjs.org/api/ng/directive/select自动处理。这ng-model
指令接收或设置所选选项。
See:
- Using ng-repeat生成select options https://docs.angularjs.org/api/ng/directive/select#using-ngrepeat-to-generate-select-options
- 使用选择与ng-options并设置默认值 https://docs.angularjs.org/api/ng/directive/select#using-select-with-ngoptions-and-setting-a-default-value
angular.module('ngrepeatSelect', [])
.controller('ExampleController', ['$scope', function($scope) {
$scope.data = {
model: null,
availableOptions: [
{id: '1', name: 'Option A'},
{id: '2', name: 'Option B'},
{id: '3', name: 'Option C'}
]
};
}]);
<script src="https://unpkg.com/angular/angular.js"></script>
<div ng-app="ngrepeatSelect">
<div ng-controller="ExampleController">
<form name="myForm">
<label for="repeatSelect"> Repeat select: </label>
<select name="repeatSelect" id="repeatSelect" ng-model="data.model">
<option ng-repeat="option in data.availableOptions" value="{{option.id}}">{{option.name}}</option>
</select>
</form>
<hr>
<tt>model = {{data.model}}</tt><br/>
</div>
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