Multi-page Form

You can have the user enter their postcode and open the address form on a new page by saving the user's input in localStorage.

This simulates a user entering a postcode when the Postcode Lookup API is initialised.

Postcode Page

The first page collects the postcode and stores it in localStorage:

localStorage.clear();
const postcode = document.getElementById("postcode");
const btn = document.getElementById("btn-postcode");
btn.addEventListener("click", function () {
  localStorage.setItem("postcode", postcode.value);
});

<form>
  <label for="postcode">Type Postcode Below</label>
  <input type="text" id="postcode" />
  <a href="/form.html">
    <button id="btn-postcode">Search Postcode</button>
  </a>
  <p>
    The postcode you search will be available on the next page using
    localStorage
  </p>
</form>

Form Page

The address form page reads the stored postcode and auto-triggers the lookup on load:

Live Demo

Loading...

<form>
  <label>Search your Address</label>
  <div id="context"></div>
  <div id="address_form">
      <label>Organisation</label>
      <input id="organisation" type="text" />
      <label>Address Line One</label>
      <input id="first_line" type="text" />
      <label>Address Line Two</label>
      <input id="second_line" type="text" />
      <label>Address Line Three</label>
      <input id="third_line" type="text" />
      <label>Post Town</label>
      <input id="post_town" type="text" />
      <label>Postcode</label>
      <input id="postcode" type="text" />
  </div>
</form>

import { PostcodeLookup } from "@ideal-postcodes/postcode-lookup";

const pl = PostcodeLookup.setup({
  onLoaded: () => {
    pl.input.value = localStorage.getItem("postcode");
    pl.button.click();
  },
  context: "#context",
  apiKey: "ak_test",
  outputFields: {
    line_1: "#first_line",
    line_2: "#second_line",
    line_3: "#third_line",
    post_town: "#post_town",
    postcode: "#postcode",
  },
});