bootstrap 3 tabs not working properly

Question

I almost copied the code from their website. The tab is initiated perfectly, and when I click on tabs, new panels are activated. However, the \"active\" class is not applied

Answer 1

My problem was that I sillily concluded bootstrap documentation is the latest one.
If you are using Bootstrap 4, the necessary working tab markub is: http://v4-alpha.getbootstrap.com/components/navs/#javascript-behavior

  
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