JSFiddle - React, Tailwind, and code Playground

HTML

<form method="POST" action="">
  Enter name: <input class="some-input" type="text">
  <input type="submit">
</form>

JavaScript

var form = document.querySelector('form');

form.addEventListener('submit', function(e) {
  e.preventDefault();
  var value = form.querySelector('.some-input').value;
  runProgramm(value);
});

function runProgramm(value) {
	console.log(value);
}