<p>I'm trying to create a setup where you enter a zip code, submit the form, and then use JavaScript to check if the first 4 characters of the zip code match the zip code in some JSON data, and if so , then change the price on the page. This will be for a Shopify site, so any help on how to implement it there would be great. </p> <p>Currently when I submit the form the page refreshes but nothing happens. </p> <p>Here’s what I have so far, still in the early stages: </p> <p><br /></p> <pre class="brush:js;toolbar:false;">async function checkZones() { // const requestURL = "{{ 'zones.json' | asset_url }}"; // const request = new Request(requestURL); //const response = await fetch(request); // const zones = await response.json(); const zones = [{ "name": "zone 1", "postcodes": [ "test1", "test2", "test3", "test4", "test5", "test6", "test7", "test8", "test9", "test10" ], "cost": 10.8 }, { "name": "zone 2", "postcodes": [ "test12", "test13", "test14", "test15", "test16", "test17", "test18", "test19", "test18", "test19", "test20" ], "cost": 16.8 } ] console.log(zones); updatePrice() } function updatePrice(zone) { const postcodeFormInput = document.querySelector('#postcodeForm input[type="text]"'); const postcodes = zone.postcodes; for (const code of postcodes) { if (postcodeFormInput.value.contains(code)) { const productPrice = document.querySelector('#ProductPrice-product-template').textContent; if (code === "test1") { const newPrice = productPrice zone.cost; document.querySelector('#ProductPrice-product-template').innerHTML = newPrice; } } } }</pre> <pre class="brush:html;toolbar:false;"><form onsubmit="checkZones()" id="postcodeForm"> <input type="text"> <button type="submit">Update Costs</button> </form><span id="ProductPrice-product-template">0.00</span></pre> <p><br /></p>

const checkZones = () => {
  // 这里是一个更简单的fetch
  //fetch("{{ 'zones.json' | asset_url }}")
  // .then(response => response.json())
  // .then(zones => updatePrice(zones));
  updatePrice(zones)
}
const postcodeFormInput = document.querySelector("#postcodeForm input[type=text]");
const productTemplate = document.getElementById('ProductPrice-product-template');
const updatePrice = (zones) => {

  const postCode = postcodeFormInput.value;
  console.log("Input",postCode)
  const cost = +zones.find(({postcodes}) => postcodes.includes(postCode))?.cost; // 如果未找到则为0
  
  if (!cost) return; // 未找到
  const productPrice = +productTemplate.textContent;
  const newPrice = productPrice + cost;
  productTemplate.innerHTML = newPrice;
};

document.getElementById("postcodeForm").addEventListener("submit", (e) => {
  e.preventDefault(); // 停止提交
  checkZones()
})

  
  更新成本

0.00