Angular.js至少需要一个复选框 [英] Angular.js required at least one checkbox

问题描述

如果这是重复的话我不会感到惊讶，但是我找不到任何简单的东西。

I wouldn't be surprised if this is a duplicate however I can't find anything simple along the lines of what I need.

我只需要的是用户需要选择至少一个复选框，但我很困惑如何完成此操作。

All I need is the user to be required to choose at least one checkbox but I'm baffled how to accomplish this.

    <input type="checkbox" ng-model="myForm.first" /> First <br />
    <input type="checkbox" ng-model="myForm.second" />Second <br />
    <input type="checkbox" ng-model="myForm.third" /> Third

推荐答案

<input type="checkbox" ng-model="myForm.first" ng-required="myForm.first || myForm.second || myForm.third" /> First <br />
<input type="checkbox" ng-model="myForm.second" ng-required="myForm.first || myForm.second || myForm.third"/>Second <br />
<input type="checkbox" ng-model="myForm.third" ng-required="myForm.first || myForm.second || myForm.third"/> Third

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