AngularJS更新数组变量和非数组变量，其名称是通过字符串获取的 [英] AngularJS update array var and non-array var whose names were obtained by string

问题描述

我正在尝试更新以字符串形式获取的不同变量。有些是数组，有些则不是。为了通过相同的函数更新这些值，我需要通过字符串来获取它们。以下代码仅适用于非数组变量。

I'm trying to update different variables that are obtained as strings. Some are arrays, and some are not. For these values to be updated by the same function, I'd need for them to be obtained by a string. The following code only works with non-array variables.

HTML：

Message is: {{ message }}
<button ng-click="updateVar('message')">Update</button>
<br>
Message in array is: {{ messages.welcome }}
<button ng-click="updateVar('messages.welcome')">Update</button>

AngularJS：

AngularJS:

$scope.message = 'Simple message';

$scope.messages = {
    welcome: 'Message in array'
};

$scope.updateVar = function(varToUpdate) {
    $scope[varToUpdate] = 'Var was updated!';
};

如何使用数组？

谢谢！

推荐答案

您可以将显示的变量用作参数：

You can use the displayed variable as a parameter:

Message is: {{ message }}
<button ng-click="updateVar(message)">Update</button>
<p>
Message in array is: {{ messages.welcome }}
<button ng-click="updateVar(messages.welcome)">Update</button>

&在您的js文件中：

& in your js file:

$scope.message = 'Simple message';

$scope.messages = {
    welcome: 'Message in array'
};

$scope.updateVar = function(varToUpdate) {
     $scope[varToUpdate] = 'Var was updated!';
};

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