angular复选框使用ng单击重置绑定到复选框的ng模型，从而防止复选框被取消选中 [英] angular checkbox using ng-click to reset the ng-model that is binded to the checkbox, thus prevent the checkbox from being unchecked

问题描述

我有一些逻辑，在某种情况下，我想第一个复选框被检查。因此，如果用户尝试取消选中它，我想使用ng单击将绑定到复选框的ng-model更改为true。但是复选框仍然被取消选中....

I have some logic that on certain senario, I want the first check box to be alway checked. So if user tries to uncheck it, I want to use ng-click to change the ng-model binded to the checkbox to 'true'. But the checkbox is still being unchecked....

如何实现保持复选框保持检查基于ng-model的值，而不使用像angular.element （elem）.attr（checked，true）

How do I achieve keep the checkbox remains checked based on the ng-model's value, without using something like angular.element(elem).attr("checked", true)

<input type = 'checkbox' ng-model = 'checkboxValue' ng-click = "handler"/>

$scope.checkboxValue = false;
$scope.handler = function(){
    $scope.checkboxValue = true;
}

我希望复选框保持选中状态，因为ng-model checkboxValue为true。显然我错过了这里的东西。

I want the checkbox remain checked since the ng-model checkboxValue is true...but apparently I missed something here

这里是plunker： http://plnkr.co/edit/WbjZilFLDfbP3mQ4oMgx?p=preview

Here's the plunker:http://plnkr.co/edit/WbjZilFLDfbP3mQ4oMgx?p=preview

我走进了调用栈，看起来像我设置ng -model为true，然后在$ digest期间，ng-model根据复选框的状态设置：选中或取消选中。所以它更像是单向绑定：根据checkbox状态绑定ng模型？

I stepped into the call stack, looks like I set the ng-model to true, then during $digest, the ng-model is set based on the checkbox's status : checked or unchecked. So it is more like one way binding: bindding the ng-model based on the checkbox status?

推荐答案

只需使用 ng-change ，而不是 ng-click

这里是 DEMO

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