css - AngularJS Twitter bootstrap 3 Navtab class removed -

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i wanted add styling bootstrap tabs dynamically via angularjs (computed values) found class reference angular scope 'class="{{iscomplete1}}"' removed. these computed values display expected when not part of class

what right way add class nav-tab dynamically?

<ul class="nav nav-tabs">       <li class="{{iscomplete1()}}"><a href="#welcome" data-toggle="tab">welcome</a></li>       <li class="{{iscomplete2()}}"><a href="#step1" data-toggle="tab">step 1</a></li>

thanks

my first thought bootstrap issue simple angularjs issue

all needed use ng-class directive i.e. ng-class="iscomplete1()".


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