JSFiddle - React, Tailwind, and code Playground

HTML

<button command="--toggle" commandfor="target">TRIGGER</button>
<button command="--toggle" commandfor="target">TRIGGER 2</button>
<p id="target">TARGET</p>
<p id="target">TARGET 2</p>

CSS

.foo {
  color: lime;
}

JavaScript

document.getElementById('target').addEventListener('command', event => {
  console.log(event.source)
  if (event.command === '--toggle') {
    event.target.classList.toggle('foo')
  }
})