JSFiddle - React, Tailwind, and code Playground

HTML

<a class='btn' href='#'>Click me</a>
<a class='theLink' href='http://www.bing.com'>Update me</a>

JavaScript

$('a.btn').click(function(e){
	e.preventDefault;
	var newHref = 'http://www.google.com';
  $('a.theLink').attr('href', newHref);
})