ngClass和条件表达式

Question

ng-class="{'blue': item==1, 'blue': !item}"

如果我的项目未设置或项目等于1，但我无法以这种方式工作，我希望我可以上蓝色课。

Answer 1

blue if my item is not set or item equal to one

You need to use || operator and define expression as

ng-class="{'blue': !item || item==1 }"

Answer 2

You may find following code snippet helpful.

 ng-class="{ 'active' : CreateCaseModel.CaseTypeId == 2 }

In above case, if expression is evaluated to true it will add active class.

replace "CreateCaseModel.CaseTypeId == 2" with your own condition, and it(expression) should return true or false.

ng-class="{ 'active' : expression }

Answer 3

For this to work just create one more class containing the same contents as in class blue and use that for second condition. Because ng-class doesn't allow to same class to apply for different condition.

Contents of class blue and blue1 are same.

ng-class = "{'blue': item == 1, 'blue1': !item}"