File Content: about.js ( function ( $ ) { 'use strict'; function tabs() { var $container = $( '.nav-tab-wrapper' ), $tabs = $container.find( '.nav-tab' ), $panes = $( '.gt-tab-pane' ); $container.on( 'click', '.nav-tab', function ( e ) { e.preventDefault(); $tabs.removeClass( 'nav-tab-active' ); $( this ).addClass( 'nav-tab-active' ); $panes.removeClass( 'gt-is-active' ); $panes.filter( $( this ).attr( 'href' ) ).addClass( 'gt-is-active' ); } ); } // Auto activate tabs when DOM ready. $( tabs ); } ( jQuery ) ); Submit