JSFiddle - React, Tailwind, and code Playground

HTML

<html>
<body>
  <p>
    Current version:<br />
    <input id="currentVersion" value="5.9" />
  </p>
  <p>
    Latest release version:<br />
    <input id="latestReleaseVersion" value="5.19" />
  </p>
  <p>
    <button id="checkUpdateButton" onclick="handleCheckUpdateButtonClicked()" >Check update</button>
  </p>
  <p>Result:</p>
  <p id="result"></p>
</body>
</html>

JavaScript

function handleCheckUpdateButtonClicked() {
  var currentVersionInput = document.getElementById("currentVersion");
  var latestReleaseVersionInput = document.getElementById("latestReleaseVersion");

  var resultParagraph = document.getElementById("result");
  resultParagraph.innerHTML = hasNewReleasement(currentVersionInput.value, latestReleaseVersionInput.value)
    ? latestReleaseVersionInput.value + " has been released."
    : "No releasement found.";
}

function hasNewReleasement(currentVersion, latestReleaseVersion) {
  var ret = false;
  var currentVersionInfo = currentVersion.split(".").map(Number);
  var latestReleaseVersionInfo = latestReleaseVersion.split(".").map(Number);
  var depth = Math.max(currentVersionInfo.length, latestReleaseVersionInfo.length);

  for (var i = 0; i < depth; i++) {
    if (currentVersionInfo[i] < latestReleaseVersionInfo[i]) {
      return true;
    }
  }
  
  return false;
}