JSFiddle - React, Tailwind, and code Playground

by ecmanaut

HTML

<form onsubmit="return test()">
  <input id="what" value="(flex: 1)">
</form>

JavaScript

function test() {
  try {
    what = document.getElementById('what').value;
    document.body.style.background = CSS.supports(what) ? 'green' : 'red'
  }catch(e){alert(e);}
  return false;
}

test();