我有一个问题是，它可以声明纳克级的内部注释

 纳克级={'测试'：真，'TEST1'：真，//一些评论测试2：真正} 

解决方案

它不会出现。你会需要使用多行注释语法像这样：

 ＆LT; D​​IV纳克级={'测试'：真，'TEST1'：真，/ *一些注释* /测试2：真正}＆GT;＆LT; / DIV＆GT; 

但是，这将引发一个错误：

语法错误：令牌'*'是意外，希望[：]的前pression [{测试的29列：真的，测试1：真实的，/ *一些注释* /测试2 ：真正}]开始[*一些注释* /测试2：真正}]

但是，您可以解决此通过在控制器/指令声明你的风格：

  $ scope.styles = {    测试：真实，    测试1：真实，    / *一些注释* /测试2：真实}; 

和包括在你看来：

 ＆LT; D​​IV NG-应用=MyApp的＆GT;    ＆LT; D​​IV NG控制器=MyCtrl＆GT;        ＆LT; D​​IV纳克级=风格＆GT;＆LT; / DIV＆GT;    ＆LT; / DIV＆GT;＆LT; / DIV＆GT; 

的jsfiddle例

I have a question is it possible to declare comment inside of ng-class

ng-class="{'test':true,'test1':true, //some comment 'test2':true}"

It doesn't appear to. You would have needed to use the multiline comment syntax like so:

<div ng-class="{'test':true,'test1':true, /* some comment */ 'test2':true}"></div>

But that throws an error:

Syntax Error: Token '*' is unexpected, expecting [:] at column 29 of the expression [{'test':true,'test1':true, /* some comment */ 'test2':true}] starting at [* some comment */ 'test2':true}].

However you can work around this by declaring your styles in your controller/directive:

$scope.styles = {
    'test': true,
    'test1': true,
    /* some comment */ 'test2': true
};

And including that in your view:

<div ng-app="MyApp">
    <div ng-controller="MyCtrl">
        <div ng-class="styles"></div>
    </div>
</div>

jsFiddle Example