JSFiddle - React, Tailwind, and code Playground

HTML

<table>
  <tr>
    <td>Allô, monde.</td>
    <td>Allô, monde.</td>
  </tr>
</table>

<button>hide/show</button>

CSS

table {
  border: 1px solid black;
}

tr {
  background: gray;
}

JavaScript

var toggle = true;
document.querySelector("button").addEventListener("click", function() {
   if(toggle) {
      document.querySelector("td").style.setProperty("visibility", "hidden");
   } else {
      document.querySelector("td").style.setProperty("visibility", "visible");
   }
   
   toggle = !toggle;
   return false;
});