alexgodin/gist:7d8328d2012bd5af3db7fd8cad6e7231

## gistfile1.txt
<html>

  <body>
    <script src="https://unpkg.com/libphonenumber-js@1.9.11/bundle/libphonenumber-min.js" crossorigin></script>
<!--     <script>
      window.Retool.subscribe(function(model) {
        if (!model) {
          return
        }
      })

    </script> -->
    <input type="text" inputmode="tel" id="phone-input"></input>
    <script>
        var input = document.getElementById('phone-input');
        input.onkeyup = (e) => {
            var oldValue = input.value
            var newValue = new libphonenumber.AsYouType('US').input(oldValue);
            input.value = newValue
        }
    </script>
  </body>

</html>
	<html>

	<body>
	<script src="https://unpkg.com/libphonenumber-js@1.9.11/bundle/libphonenumber-min.js" crossorigin></script>
	<!-- <script>
	window.Retool.subscribe(function(model) {
	if (!model) {
	return
	}
	})

	</script> -->
	<input type="text" inputmode="tel" id="phone-input"></input>
	<script>
	var input = document.getElementById('phone-input');
	input.onkeyup = (e) => {
	var oldValue = input.value
	var newValue = new libphonenumber.AsYouType('US').input(oldValue);
	input.value = newValue
	}
	</script>
	</body>

	</html>