How to assign alternate class to rows in Angular JS?

You should be using the angular directives ngClassEven and ngClassOdd for this.

Have a look at the documentation section for how to use them

http://docs.angularjs.org/api/ng.directive:ngClassEven

http://docs.angularjs.org/api/ng.directive:ngClassOdd

Hope this helps.

From the Angular docs..

Use ng-class-odd ng-class-even

<li ng-repeat="name in names">
  <span ng-class-odd="'odd'" ng-class-even="'even'">
    {{name}}
  </span>
</li>

As @ganaraj states ng-class-odd and ng-class-even are the right way to do this, but for the benefit of searchers, your initial proposal wasn't far off working in Angular >=1.2.19.

Here is a closely related example of something that would have worked and would also work if coloring more than alternate rows (e.g. every 3 rows):

<div>
<style>
    .color0 {
        background-color: lightblue;
    }

    .color1 {
        background-color: lightyellow;
    }

    .color2 {
        background-color: lightgray;
    }
</style>


<div ng-repeat="result in results" ng-class="'color' + ($index % 3)">
    <div>
        <p>{{result.myText}}</p>
    </div>
</div>