问。为什么我的下拉菜单没有显示所选择的值? 这是我的javascript代码
<div ng-app="myApp">
<div ng-controller="MyCtrl">
<select ng-model="myModel.Active" convert-to-number>
<option value="-1">Select</option>
<option value="1">Yes</option>
<option value="2">No</option>
<option value="3">Maybe</option>
</select>
<span>{{myModel.Active}}</span>
</div>
</div>
javascript
var myApp = angular.module("myApp",[]);
myApp.controller("MyCtrl", function($scope){
$scope.myModel = {};
$scope.myModel.Active=2; //
});
js-fiddle链接 - https://jsfiddle.net/shatherali/4mxwzL5y/19/
编辑:请注意我不想使用字符串值。活动必须是数字值。
答案 0 :(得分:3)
这解决了您的问题:
var myApp = angular.module('myApp', []);
myApp.controller('MyCtrl', function ($scope) {
$scope.myModel = {};
$scope.myModel.Active = '2'; // it's a string
});
的 DEMO 强>
convert-to-number
指令正常工作。
var myApp = angular.module('myApp', []);
myApp.directive('convertToNumber', function () {
return {
require: 'ngModel',
link: function(scope, element, attrs, ngModel) {
ngModel.$parsers.push(function(val) {
return parseInt(val, 10);
});
ngModel.$formatters.push(function(val) {
return '' + val;
});
}
};
});
的 DEMO 强>