Цикл и добавление?

Question

У меня есть школьный проект, и на данный момент я действительно застрял. Когда я смотрю журнал консоли, ошибок нет, если я не пытаюсь вызвать функцию updatePreview. Он вызывает массив, к которому я пытаюсь получить доступ, но не будет добавлять.

const BASE_URL = "https://api.harvardartmuseums.org"; // API
const KEY = "apikey=24ee2a20-b0ec-11ea-b0f6-a19e3f09e261"; // PERSONAL KEY

//MAIN FETCH FUNCTION
async function fetchObjects() {
  const url = `${BASE_URL}/object?${KEY}`; //brings data in from API

  try {
    const response = await fetch(url); //fetches the data
    const data = await response.json(); //waits for data
    return data; //returns data
  } catch (error) {
    console.error(error); //console log error
  }
}

function onFetchStart() {
  $("#loading").addClass("active");
}

function onFetchEnd() {
  $("#loading").removeClass("active");
}

fetchObjects().then((fetchTest) => console.log(fetchTest)); // { info: {}, records: [{}, {},]}

//**********FETCHING CATEGORY LISTS**********
//FETCHING CENTURIES
async function fetchAllCenturies() {
  const url = `${BASE_URL}/CENTURY?${KEY}&size=100&sort=temporalorder`;
  if (localStorage.getItem("centuries")) {
    return JSON.parse(localStorage.getItem("centuries"));
  }
  try {
    const response = await fetch(url);
    const { records } = await response.json();
    localStorage.setItem("centuries", JSON.stringify(records));
    return records;
  } catch (error) {
    console.error(error);
  }
  onFetchEnd();
  onFetchStart();
}
fetchAllCenturies();

//FETCHING CLASSIFICATIONS
async function fetchAllClassification() {
  const url = `${BASE_URL}/classification?${KEY}&size=100&sort=name`;
  if (localStorage.getItem("classification")) {
    return JSON.parse(localStorage.getItem("classification"));
  }
  try {
    const response = await fetch(url);
    const { records } = await response.json();
    localStorage.setItem("classification", JSON.stringify(records));
    return records;
  } catch (error) {
    console.error(error);
  }
  onFetchEnd();
  onFetchStart();
}
fetchAllClassification();

//PREFETCH CATEGORY LIST FUNCTION
async function prefetchCategoryLists() {
  try {
    const [classifications, centuries] = await Promise.all([
      fetchAllClassification(),
      fetchAllCenturies(),
    ]);

    $(".classification-count").text(`(${classifications.length})`);
    classifications.forEach((classification) => {
      $("#select-classification").append(
        $(`<option value="${classification.name}">${classification.name}</option>`)
      );
    });

    $(".century-count").text(`(${centuries.length})`);
    centuries.forEach((century) => {
      $("#select-century").append($(`<option value="${century.name}">${century.name}</option>`));
    });
  } catch (error) {
    console.error(error);
  }
}
prefetchCategoryLists();

function buildSearchString() {
  const classification = $("#select-classification").val();
  const century = $("#select-century").val();
  const keywords = $("#keywords").val();
  return `${BASE_URL}/object?${KEY}&classification=${classification}&CENTURY=${century}&keyword=${keywords}`;
}

//SEACH CLICK FUNCTION
$("#search").on("submit", async function (event) {
  event.preventDefault();
  onFetchStart();
  try {
    const response = await fetch(buildSearchString());
    const { records, info } = await response.json();
    console.log(records, info);
    return records, info;
  } catch (error) {
    console.error(error);
  } finally {
    onFetchEnd();
  }
});

function renderPreview(record) {
  const { description, primaryimageurl, title } = record;

  return $(`<div class="object-preview">
        <a href="#">
        ${
          primaryimageurl && title
            ? `<img src="${primaryimageurl}" /><h3>${title}<h3>`
            : title
            ? `<h3>${title}<h3>`
            : description
            ? `<h3>${description}<h3>`
            : `<img src="${primaryimageurl}" />`
        }
        </a>
      </div>`).data("record", record);
}

//PAGINATION
function updatePreview(records) {
  const root = $("#preview");

  const results = root.find(".results");
  results.empty();

  records.forEach((record) => {
    results.append(renderPreview(record));
  });
}

updatePreview();

@import url("https://fonts.googleapis.com/css?family=Roboto|Playfair+Display|Roboto+Condensed&display=swap");

* {
  border: 0;
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

#app {
  display: grid;
  grid-template-columns: 320px 1fr;
  grid-template-rows: auto 1fr;
  grid-gap: 8px;

  height: 100%;
  width: 100%;

  background-color: black;
}

#search {
  grid-row: 1;
  grid-column: 1 / -1;

  padding: 8px;

  display: grid;
  grid-gap: 8px;
  grid-template-columns: minmax(300px, 1fr) 240px 240px 100px;

  font-family: "Staatliches", cursive;
  font-size: 16px;
  color: rgb(81, 74, 126);
  background: black;
  border-bottom: 1px solid black;
}

#search h1 {
  grid-row: 1;
  grid-column: 1 / -1;
  color: rgb(81, 74, 126);
  font-family: "Metal Mania", cursive;
}

#search fieldset {
  display: flex;
  flex-direction: column;
}

#search fieldset label {
  margin-bottom: 0.5em;
  font-size: 1.2em;
}

#search fieldset label span {
  margin-bottom: 0.5em;
  font-size: 0.8em;
  font-weight: bold;
  color: black;
  margin-left: 4px;
}

#search select {
  padding: 4px;
  width: 100%;
  height: 32px;

  font-family: "Staatliches", cursive;
  font-size: 1em;
  font-weight: 700;

  background: #fff;
  border: 1px solid black;
  border-radius: 8px;
}

#search option {
  font-weight: normal;
}

#search input,
#search button {
  padding: 4px 8px;
  width: 100%;
  height: 32px;
  font-family: "Staatliches", cursive;
  font-size: 1em;

  border: 1px solid black;
}

#search button {
  align-self: flex-end;
  background-color: rgb(81, 74, 126);
  color: white;
  font-family: "Staatliches", cursive;
}

#preview,
#feature {
  font-family: "Staatliches", cursive;
}

#preview {
  grid-column: 1;
  grid-row: 2;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  overflow-y: hidden;
  color: white;
  background-color: black;
}

#preview .pagination {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  grid-gap: 8px;
  padding: 8px;
  border-bottom: 1px solid black;
  background-color: black;
}

button:hover {
  box-shadow: 0 20px 25px 0 rgb(24, 0, 70);
  background-color: rgb(192, 128, 252);
}

.pagination button {
  padding: 4px 12px;
  font-size: 1rem;
  background: rgb(81, 74, 126);
  color: white;
  cursor: pointer;
  font-family: "Staatliches", cursive;
}

.pagination button:disabled {
  background: rgb(81, 74, 126);
  color: #ffffff;
  cursor: none;
  font-family: "Staatliches", cursive;
}

.results {
  min-height: 0;
  overflow-y: scroll;

  display: flex;
  flex-direction: column;
  padding: 8px;
}

.results .object-preview {
  display: flex;
  flex-direction: column;

  box-shadow: 0 2px 6px -3px black;
  padding: 8px;
  background: white;
}

.results .object-preview:not(:last-of-type) {
  margin-bottom: 8px;
}

.results .object-preview img {
  width: 100%;
}

#feature {
  grid-column: 2;
  grid-row: 2;

  padding: 8px;
  display: flex;

  background: rgb(144, 171, 197);
  overflow: hidden;
  background-image: url("https://img1.goodfon.com/wallpaper/nbig/6/ba/black-dark-vintage-pattern-3872.jpg");
}

.object-feature {
  flex-grow: 1;

  display: grid;

  grid-template-columns: minmax(0, 1fr) 420px;
  grid-template-rows: auto minmax(0, 1fr);

  background: #fff;
  box-shadow: 0 4px 12px -3px black;
}

.object-feature > * {
  padding: 8px;
}

.object-feature header {
  grid-row: 1;
  grid-column: 1 / -1;

  background: steelblue;
  color: white;
  text-shadow: 1px 1px 2px black;
  border-bottom: 1px solid black;

  font-size: 1.4rem;
}

.object-feature .facts {
  grid-row: 2;
  grid-column: 1;

  min-height: 0;
  overflow-y: scroll;

  font-size: 1.2rem;

  display: grid;
  grid-gap: 4px 12px;
  grid-template-columns: max-content minmax(0, 1fr);
  grid-template-rows: repeat(auto-fill, 2em);
}

.object-feature .facts .title {
  grid-column: 1;
  font-weight: 900;
}

.object-feature .facts .content {
  grid-column: 2;
  font-weight: 100;
}

.object-feature .photos {
  grid-row: 2;
  grid-column: 2;

  padding: 8px;
  overflow-y: scroll;
}

.object-feature img {
  width: 100%;
}

.object-feature img:not(:last-of-type) {
  margin-bottom: 8px;
}

#loading {
  position: fixed;

  top: 0;
  left: 0;
  right: 0;
  bottom: 0;

  backdrop-filter: blur(3px);
  background: rgba(0, 0, 0, 0.4);

  font-family: "Staatliches", cursive;
  font-size: 2rem;
  text-align: center;
}

#loading .message {
  min-width: 480px;
  padding: 3rem;

  box-shadow: 0 2px 8px black;
  background: white;

  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

#loading:not(.active) {
  display: none;
}

<html>
  <head>
    <meta name="viewport" content="width=device-width,initial-scale=1" />
    <title>Harvard Art</title>
    <link rel="stylesheet" href="style.css" />
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
    <link
      href="https://fonts.googleapis.com/css2?family=Metal+Mania&family=Staatliches&display=swap"
      rel="stylesheet"
    />
    <script defer src="app.js"></script>
  </head>
  <body>
    <div id="app">
      <form id="search">
        <h1>
          Search the Harvard Art Collection
        </h1>
        <fieldset>
          <label for="keywords">Query</label>
          <input id="keywords" type="text" placeholder="enter keywords..." />
        </fieldset>
        <fieldset>
          <label for="select-classification"
            >Classification <span class="classification-count"></span
          ></label>
          <select name="classification" id="select-classification">
            <option value="any">Any</option>
          </select>
        </fieldset>
        <fieldset>
          <label for="select-century">Century <span class="century-count"></span></label>
          <select name="century" id="select-century">
            <option value="any">Any</option>
          </select>
        </fieldset>
        <button>SEARCH</button>
      </form>
      <aside id="preview">
        <header class="pagination">
          <button disabled class="previous">Previous</button>
          <button disabled class="next">Next</button>
        </header>
        <section class="results"></section>
      </aside>
      <main id="feature"></main>
    </div>
    <div id="loading">
      <h2 class="message">Searching...</h2>
    </div>
  </body>
</html>

Я не закончил даже половину этого проекта, но прямо сейчас мне просто нужно, чтобы предварительный просмотр появлялся на боковой панели.

Мои инструкции таковы: возьмите элемент результатов, он соответствует .results внутри root очистите его l oop над записями и добавьте renderPreview После этого вызовите updatePreview после того, как мы успешно извлечем записи. в обратном вызове отправки для панели поиска. Попробуйте выполнить поиск, и вы увидите, что результаты появятся слева.