JSFiddle - React, Tailwind, and code Playground

HTML

<input type="text">
<a href="">Disable</a>

CSS

a {
  display: flex;
  justify-content: center;
  align-items: center;
  text-decoration: none;
  color: #fff;
  font-size: 19px;
  width: 200px;
  height: 50px;
  background: red;
  -webkit-border-radius: 7px;
  -moz-border-radius: 7px;
  border-radius: 7px;
}

input {
  width: 400px;
  height: 40px;
  margin-bottom: 30px;
}

JavaScript

document.querySelector('a').addEventListener('click', (e) => {
	e.preventDefault();
  document.querySelector('input').setAttribute('disabled', 'disabled')
})