ngModel对输入类型文本的工作方式是否不同并选择？
未选择选择控件以反映初始模型值.
未选择选择控件以反映初始模型值.
当我更改select,input和currentUser.field的值也会改变,但如果我将输入文本的值更改为另一个键,则没有任何选择.
{{currentUser.field}} // show correct field field key (number) val
// ng-model works => show correct field key (number) val
<input ng-model="currentUser.field" type="text" />
// <option value="?" selected="selected" label=""></option> is selected
<select ng-model="currentUser.field"
ng-options='item.key as item.value for item in currentUser.collections.field '>
</select>
// only works with input text and {{currentUser.field}}
<button ng-click='currentUser.field = 305'>select field (int)</button>
<button ng-click='currentUser.field = "305"'>select field (string)</button>
解决方法
您的代码应该正常工作,除非您将值设置为不在您的选项中的currentUser.field：
var app = angular.module('app',[]);
app.controller('myController',function($scope) {
$scope.currentUser = {
collections: {
field: [{
key: '1',value: 'one'
},{
key: '2',value: 'two'
},{
key: '3',value: 'three'
}]
}
};
$scope.currentUser.field = "2";
});
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.3.15/angular.min.js"></script>
<div ng-app='app' ng-controller='myController'>
<h3>expression</h3>
{{currentUser.field}}
<h3>input</h3>
<input ng-model='currentUser.field' type='text'>
<h3>select</h3>
<select ng-model='currentUser.field' ng-options='item.key as item.value for item in currentUser.collections.field'></select>
<h3>buttons</h3>
<button ng-click='currentUser.field="305"'>305</button>
<button ng-click='currentUser.field="1"'>1</button>
</div>
