how to make a bootstrap tab active using jquery code example

Example 1: bootstrap tabs click event jquery

$('a[data-toggle="tab"]').on('shown.bs.tab', function (e) {
  var target = $(e.target).attr("href") // activated tab
  alert(target);
});

Example 2: bootstrap set active tab javascript

$(document).ready(function(){
    activaTab('aaa');
});

function activaTab(tab){
    $('.nav-tabs a[href="#' + tab + '"]').tab('show');
};