键中带破折号的 ngClass 样式 [英] ngClass style with dash in key

问题描述

我希望这能让人们避免使用破折号的样式，尤其是在 bootstrap 变得如此流行的情况下.

I hope this saves someone a headache with styles that use dashes, especially since bootstrap has become so popular.

我正在使用 angular 1.0.5

I am using angular 1.0.5 by way of

<script src="//ajax.googleapis.com/ajax/libs/angularjs/1.0.5/angular.js"></script>

在ngClass 文档中，示例很简单，但也提到表达式可以是类名到布尔值的映射.我试图在我的图标上使用icon-white"样式，如 bootstrap 文档，取决于一个布尔变量.

In the ngClass documentation, the example is simple, but it also mentions the expression can be a map of class names to boolean values. I was trying to use the "icon-white" style on my icon as shown in the bootstrap documentation, depending on a boolean variable.

<i class="icon-home" ng-class="{icon-white: someBooleanValue}">

上面的行不起作用.当 someBooleanValue 为 true 时，该类不会附加 icon-white.但是，如果我将键更改为 iconWhite，它会成功添加到类值列表中.如何用破折号添加值?

The line above does not work. The class is not appended with icon-white when someBooleanValue is true. However, if I change the key to iconWhite, it is successfully added to the list of class values. How would one add a value with a dash?

推荐答案

经过数小时的黑客攻击，结果是破折号被插入了！需要引用.

After hours of hacking around, it turns out the dash gets interpolated! Quotes are needed.

<i class="icon-home" ng-class="{'icon-white': someBooleanValue}">

我希望这能帮助人们避免脱发.

I hope this helps someone from tearing their hair out.

更新:

在旧版本的 Angular 中，使用反斜杠也可以解决问题，但在新版本中不行.

In older versions of Angular, using a backslash also does the trick, but not in the newer versions.

<i class="icon-home" ng-class="{icon\-white: someBooleanValue}">

前者可能更受欢迎，因为您可以更轻松地在您喜欢的编辑器中搜索它.

The former is probably preferred, since you can more easily search for it in your favorite editor.

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