Code to use with Webflow to gate access to a page and collect an email address

gate-page.js

/*
Permission is hereby granted, free of charge, to any person obtaining a copy of this
software and associated documentation files (the "Software"), to deal in the Software
without restriction, including without limitation the rights to use, copy, modify, merge,
publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or
substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/

// the email input
const email = document.querySelector("#email");
// the submit button
const submit = document.querySelector("#submit");
// the overlay
const overlay = document.querySelector("#overlay");

// write javascript that stores email in local storage when submit is clicked
submit.addEventListener("click", function (event) {
  localStorage.setItem("gated", true);
  overlay.style.display = "none";
});

// on page load check if gated is true
if (localStorage.getItem("gated")) {
  // if gated is true, hide the form
  overlay.style.display = "none";
} else {
  // if gated is false, show the form
  overlay.style.display = "flex";
}