【发布时间】:2017-10-22 04:21:33
【问题描述】:
我需要通过单击一些输入按钮来动态更改特定 div 的控制器。
为什么第一种方式有效,但如果我用控制器本身替换一个元素数组,则第二种方式无效(参见下面的代码)。
以及如何更好地实现这样的功能?
Plnkr with one-element array (works)
index.html
<body ng-app="myApp">
<div ng-controller="MyCtrl">
Hello, {{name}}!
<input type="button" value="click me" ng-click="changeCtrl(0)"/>
<input type="button" value="click me" ng-click="changeCtrl(1)"/>
<input type="button" value="click me" ng-click="changeCtrl(2)"/>
<div ng-repeat = "ctrl in curCtrl" ng-controller="ctrl">
{{ blah }}
</div>
</div>
</body>
</html>
script.js
var myApp = angular.module('myApp', []);
myApp.controller("MyCtrl", MyCtrl);
function MyCtrl($scope) {
$scope.name = 'Username';
$scope.ctrls = [ctrlA, ctrlB, ctrlC];
$scope.curCtrl = [ctrlA];
$scope.changeCtrl = function (idx) {
$scope.curCtrl = [$scope.ctrls[idx]];
}
}
function ctrlA($scope) {$scope.blah = "One";}
function ctrlB($scope) {$scope.blah = "Two";}
function ctrlC($scope) {$scope.blah = "Three";}
Plnkr with controller instead (doesn't work)
index.html
<body ng-app="myApp">
<div ng-controller="MyCtrl">
Hello, {{name}}!
<input type="button" value="click me" ng-click="changeCtrl(0)"/>
<input type="button" value="click me" ng-click="changeCtrl(1)"/>
<input type="button" value="click me" ng-click="changeCtrl(2)"/>
<div ng-controller="curCtrl">
{{ blah }}
</div>
</div>
</body>
</html>
script.js
var myApp = angular.module('myApp', []);
myApp.controller("MyCtrl", MyCtrl);
function MyCtrl($scope) {
$scope.name = 'Username';
$scope.ctrls = [ctrlA, ctrlB, ctrlC];
$scope.curCtrl = ctrlA;
$scope.changeCtrl = function(idx) {
$scope.curCtrl = $scope.ctrls[idx];
}
}
function ctrlA($scope) {$scope.blah = "One";}
function ctrlB($scope) {$scope.blah = "Two";}
function ctrlC($scope) {$scope.blah = "Three";}
【问题讨论】:
标签: angularjs controller angularjs-ng-repeat