缩短纳克级值

Question

有没有写这个任何方式更简洁：我发现自己写了很多，这些超长ng-class属性表达式

ng-class="{ 'red': (percent < 0), 'green': (percent > 0), 'glyphicon-arrow-down': (percent < 0), 'glyphicon-arrow-up': (percent > 0) }" 

。

Answer 1

您可以组合类似条件的类。

ng-class="{ 'red glyphicon-arrow-down': (percent < 0), 'green glyphicon-arrow-up': (percent > 0) }" 

Answer 2

也许采取了括号，如：

ng-class="{ 'red': percent < 0, 
      'green': percent > 0, 
      'glyphicon-arrow-down': percent < 0, 
      'glyphicon-arrow-up': percent > 0 }"