我一直在尝试实现采用范围变量并更改其原始值的函数,但没有成功。
var app = angular.module('plunker', []);
app.controller('MainCtrl', function($scope) {
$scope.var1 = 1;
$scope.var2 = 2;
$scope.changeVar = function (varX) {
varX = 'changed';
}
$scope.changeVar1 = function () {
$scope.changeVar($scope.var1);
};
$scope.changeVar2 = function () {
$scope.changeVar($scope.var2);
}
});
为了展示我想要实现的目标,我创建了这个 Plunker:http://plnkr.co/edit/kEq8YPJyeAfUzuz4Qiyh?p=preview
我期望的是,单击button1或button2,var1或var2将更改为“已更改”。这可能吗?
不是按照您描述的方式,但您可以传递带有变量名称的字符串并使用它指向正确的字符串:
$scope.changeVar = function (varX) {
$scope[varX] = 'changed';
}
$scope.changeVar1 = function () {
$scope.changeVar("var1");
};
$scope.changeVar2 = function () {
$scope.changeVar("var2");
}
更新的示例:http://plnkr.co/edit/K4tnhFdQ7KsuNtKTRI2X?p=preview
或者,另一种方法是将函数传递给您的changeVar
method:
$scope.changeVar = function (varX) {
varX('changed');
}
$scope.changeVar1 = function () {
$scope.changeVar(function(x){ $scope.var1 = x });
};
$scope.changeVar2 = function () {
$scope.changeVar(function(x){ $scope.var2 = x });
}
请看这里:http://plnkr.co/edit/ttRWUDzD9jAEj2Z7O64k?p=preview
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