<!doctype html>
<html>
<head>
<meta charset="utf-8">
<script>
document.addEventListener("DOMContentLoaded", () => {
  const input = document.querySelector("input");
  input.select();
  input.type = "text/x-ecmascript";
  input.setRangeText("foo", 1, 1);
  document.execCommand("enableObjectResizing");
});
</script>
</head>
<body>
<input type="number" value="a">
</body>
</html>
