angular.js - directive naming rules?

Question

Directive can only be composed of lowercase letters?

<code>.directive('名称', function() {
    return {
        restrict: 'AE',
        template: '<p>Hi there</p>',
        replace: true
    };
});
</code>

For example,
hello ok
helloA not work
Hello not work
hello_a not work
hello-a not work

What should I do if I want to name it with a phrase?

Answer 1

Using CamelCasenaming
Such as: hello A not work
Named: helloANotWork

Detailed rules:
Use the following method in html

<code>html</code><code><my-new-directive></my-new-directive>
</code>

But this is required when defining instructions

<code>javascript</code><code>myApp.directive("myNewDirective", function(){...});
</code>