JSFiddle - React, Tailwind, and code Playground

HTML

<a class="link selected" href="#tab-general">General Setting</a>
<a class="link" href="#tab-setting1">Method 1</a>

CSS

.selected {
   color: red;
}

JavaScript

$('.link').on("click",function(){
    $('.link').removeClass("selected");
    $(this).addClass("selected");
})