Angular 指令名称:只允许小写字母? [英] Angular directive name: only lower case letters allowed?

问题描述

我的代码:

app.directive('abcabc', function (){ alert('directive');}); // working

但是

app.directive('abcAbc', function (){ alert('directive');}); // not working !
app.directive('abc-abc', function (){ alert('directive');}); // not working !

我做错了吗?还是 Angular 指令有特殊的命名规则?

Am I doing wrong? Or there are special naming rules for Angular directive?

推荐答案

AngularJS 试图让每个人都开心！

AngularJS attempts to make everyone happy!

有些人更喜欢使用数据属性，比如 data-abc-abc，我想是为了让验证者开心.其他人更喜欢使用像 abc:abc 这样的命名空间，而其他人更喜欢使用实际的指令名称 abcAbc.甚至全部大写ABC_ABC.或者像 x-abc-abc 这样的扩展属性.

Some people prefer to use data attributes, like data-abc-abc, I assume to keep validators happy. Other people prefer to use namespaces like abc:abc, and others prefer to use the actual directive name abcAbc. Or even all caps ABC_ABC. Or extension attributes like x-abc-abc.

AngularJS 规范了 HTML 中使用的名称，试图涵盖所有这些情况.data- 和 x- 被剥离，剩下的用 :, - 和 _ 作为单词边界.这使得 abcAbc 从上面提到的案例中得到，用于查找 JavaScript 中声明的指令.

AngularJS normalises the name used in HTML to attempt to cover all of these cases. data- and x- are stripped, the remainder camelcased with :, - and _ as word boundaries. This makes abcAbc from the cases mentioned above, which is used to look up the directive declared in JavaScript.

这都称为属性规范化(美国:属性规范化)，可以在 AngularJS 文档中找到

This is all called attribute normalisation (US: attribute normalization) and can be found in the AngularJS documentation and source code.

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