Slack Invite: Simple Javascript Form

gistfile1.txt

<!-- Get your token here https://api.slack.com/custom-integrations/legacy-tokens --> 

<script src="https://unpkg.com/axios/dist/axios.min.js"></script>

<input id="email" type="text" placeholder="Email for invite">

<button onclick="sendInvite()">Apply</button>

<script>
function sendInvite() {
  var email = $('#email').val();
  axios.get('https://slack.com/api/users.admin.invite?token={ID GOES HERE}&email='+email)
   .then(function (response) {
      console.log(response);
      location.reload();
    })
   .catch(function (error) {
      console.log(error);
  });
}
</script>