lbry.com/web/js/quickstart.js

lbry.quickstartForm = function (selector, apiUrl) {
  var form = $(selector),
    accessToken = form.find(':input[name="access_token"]').val(),
    walletAddressInput = form.find(':input[name="wallet_address"]'),
    submitButton = form.find(':input[type="submit"]'),
    isSubmitting = false;

  function resetFormState() {
    isSubmitting = false;
    walletAddressInput.attr('readonly', null);
    submitButton.val(submitButton.data('submitLabel')).attr('disabled', null);
  }

  if (window.localStorage.getItem("quickstartFormSuccessHtml")) {
    form.find('.notice-success').html(window.localStorage.getItem("quickstartFormSuccessHtml")).show();
    form.find('.form-row, .submit-row').hide();
  } else if (accessToken) {
    form.submit(function (event) {
      if (isSubmitting) {
        return false;
      }

      form.find('.notice-success, .notice-error').hide();

      if (!walletAddressInput.val()) {
        resetFormState();
        form.find('.notice-error').html("Please supply a wallet address.").show();
        return false;
      }

      event.preventDefault();

      walletAddressInput.attr('readonly', 'readonly');
      submitButton.val(submitButton.data('submittingLabel')).attr('disabled', 'disabled');

      $.post(apiUrl, {
          access_token: accessToken,
          wallet_address: walletAddressInput.val()
        })
        .done(function (responseData) {
          var data = responseData.data;
          var anchor = $('<a class="link-primary"></a>');
          anchor.attr("href", "https://explorer.lbry.io/tx/" + data.TransactionHash);
          anchor.html(data.TransactionHash)
          form.find('.notice-success')
            .html(data.RewardAmount + " credits sent in transaction ")
            .append(anchor)
            .show();
          window.localStorage.setItem("quickstartFormSuccessHtml", form.find('.notice-success').html());
        })
        .fail(function (xhr) {
          var responseData = $.parseJSON(xhr.responseText);
          form.find('.notice-error').html(responseData.error.length ? responseData.error : "Something went wrong. Please email grin@lbry.io").show();
        })
        .always(resetFormState);
    })
    form.submit();
  }
}