Создание фильтров поиска и товаров с помощью Javascript

Добро пожаловать в сегодняшнее руководство. В сегодняшнем руководстве мы узнаем, как создавать фильтры и искать товары. Для создания этого проекта нам понадобятся HTML, CSS и Javascript. Поскольку это довольно продвинутый проект, я бы не рекомендовал его новичку в javascript. Если вы средний уровень или эксперт в javascript, вы определенно можете сделать это.

Давайте посмотрим, что это за проект на самом деле. В проект входит серия карточек продуктов. У каждой из этих карт есть название, цена и категория. Над этими тегами находится панель поиска, где пользователи могут искать продукт по его названию.

Под панелью поиска находится группа кнопок. На каждой из этих кнопок есть название категории. Когда пользователь нажимает любую из этих кнопок, будут отображаться продукты, соответствующие этой конкретной категории.

Структура папок проекта:

Теперь давайте сначала создадим структуру каталогов проекта, чтобы мы могли начать кодирование. Начнем с создания папки проекта с названием «Фильтры и поиск продуктов». Внутри этой папки мы создаем три файла. Первый есть index.html, второй есть style.cssи третий есть script.js. Эти файлы представляют собой HTML-документы, таблицы стилей и файлы сценариев соответственно.

HTML:

Начнем с HTML-кода. Сначала скопируйте приведенный ниже код и вставьте его в свой HTML-файл.

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Product Filter And Search</title>
    <!-- Google Font -->
    <link
      href="https://fonts.googleapis.com/css2?family=Poppins:wght@400;500&display=swap"
      rel="stylesheet"
    />
    <!-- Stylesheet -->
    <link rel="stylesheet" href="style.css" />
  </head>
  <body>
    <div class="wrapper">
      <div id="search-container">
        <input
          type="search"
          id="search-input"
          placeholder="Search product name here.."
        />
        <button id="search">Search</button>
      </div>
      <div id="buttons">
        <button class="button-value" onclick="filterProduct('all')">All</button>
        <button class="button-value" onclick="filterProduct('Topwear')">
          Topwear
        </button>
        <button class="button-value" onclick="filterProduct('Bottomwear')">
          Bottomwear
        </button>
        <button class="button-value" onclick="filterProduct('Jacket')">
          Jacket
        </button>
        <button class="button-value" onclick="filterProduct('Watch')">
          Watch
        </button>
      </div>
      <div id="products"></div>
    </div>
    <!-- Script -->
    <script src="script.js"></script>
  </body>
</html>

CSS:

Далее, чтобы добавить стили в этот проект, мы используем CSS. Теперь скопируйте приведенный ниже код и вставьте его в свой файл CSS.

* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
  border: none;
  outline: none;
  font-family: "Poppins", sans-serif;
}
body {
  background-color: #f5f8ff;
}
.wrapper {
  width: 95%;
  margin: 0 auto;
}
#search-container {
  margin: 1em 0;
}
#search-container input {
  background-color: transparent;
  width: 40%;
  border-bottom: 2px solid #110f29;
  padding: 1em 0.3em;
}
#search-container input:focus {
  border-bottom-color: #6759ff;
}
#search-container button {
  padding: 1em 2em;
  margin-left: 1em;
  background-color: #6759ff;
  color: #ffffff;
  border-radius: 5px;
  margin-top: 0.5em;
}
.button-value {
  border: 2px solid #6759ff;
  padding: 1em 2.2em;
  border-radius: 3em;
  background-color: transparent;
  color: #6759ff;
  cursor: pointer;
}
.active {
  background-color: #6759ff;
  color: #ffffff;
}
#products {
  display: grid;
  grid-template-columns: auto auto auto;
  grid-column-gap: 1.5em;
  padding: 2em 0;
}
.card {
  background-color: #ffffff;
  max-width: 18em;
  margin-top: 1em;
  padding: 1em;
  border-radius: 5px;
  box-shadow: 1em 2em 2.5em rgba(1, 2, 68, 0.08);
}
.image-container {
  text-align: center;
}
img {
  max-width: 100%;
  object-fit: contain;
  height: 15em;
}
.container {
  padding-top: 1em;
  color: #110f29;
}
.container h5 {
  font-weight: 500;
}
.hide {
  display: none;
}
@media screen and (max-width: 720px) {
  img {
    max-width: 100%;
    object-fit: contain;
    height: 10em;
  }
  .card {
    max-width: 10em;
    margin-top: 1em;
  }
  #products {
    grid-template-columns: auto auto;
    grid-column-gap: 1em;
  }
}

Javascript:

Наконец, нам нужно добавить функциональность к фильтру, а также реализовать функцию поиска. Чтобы он заработал, мы добавляем javascript. Скопируйте приведенный ниже код и вставьте его в свой файл javascript.

let products = {
  data: [
    {
      productName: "Regular White T-Shirt",
      category: "Topwear",
      price: "30",
      image: "white-tshirt.jpg",
    },
    {
      productName: "Beige Short Skirt",
      category: "Bottomwear",
      price: "49",
      image: "short-skirt.jpg",
    },
    {
      productName: "Sporty SmartWatch",
      category: "Watch",
      price: "99",
      image: "sporty-smartwatch.jpg",
    },
    {
      productName: "Basic Knitted Top",
      category: "Topwear",
      price: "29",
      image: "knitted-top.jpg",
    },
    {
      productName: "Black Leather Jacket",
      category: "Jacket",
      price: "129",
      image: "black-leather-jacket.jpg",
    },
    {
      productName: "Stylish Pink Trousers",
      category: "Bottomwear",
      price: "89",
      image: "pink-trousers.jpg",
    },
    {
      productName: "Brown Men's Jacket",
      category: "Jacket",
      price: "189",
      image: "brown-jacket.jpg",
    },
    {
      productName: "Comfy Gray Pants",
      category: "Bottomwear",
      price: "49",
      image: "comfy-gray-pants.jpg",
    },
  ],
};

for (let i of products.data) {
  //Create Card
  let card = document.createElement("div");
  //Card should have category and should stay hidden initially
  card.classList.add("card", i.category, "hide");
  //image div
  let imgContainer = document.createElement("div");
  imgContainer.classList.add("image-container");
  //img tag
  let image = document.createElement("img");
  image.setAttribute("src", i.image);
  imgContainer.appendChild(image);
  card.appendChild(imgContainer);
  //container
  let container = document.createElement("div");
  container.classList.add("container");
  //product name
  let name = document.createElement("h5");
  name.classList.add("product-name");
  name.innerText = i.productName.toUpperCase();
  container.appendChild(name);
  //price
  let price = document.createElement("h6");
  price.innerText = "$" + i.price;
  container.appendChild(price);

  card.appendChild(container);
  document.getElementById("products").appendChild(card);
}

//parameter passed from button (Parameter same as category)
function filterProduct(value) {
  //Button class code
  let buttons = document.querySelectorAll(".button-value");
  buttons.forEach((button) => {
    //check if value equals innerText
    if (value.toUpperCase() == button.innerText.toUpperCase()) {
      button.classList.add("active");
    } else {
      button.classList.remove("active");
    }
  });

  //select all cards
  let elements = document.querySelectorAll(".card");
  //loop through all cards
  elements.forEach((element) => {
    //display all cards on 'all' button click
    if (value == "all") {
      element.classList.remove("hide");
    } else {
      //Check if element contains category class
      if (element.classList.contains(value)) {
        //display element based on category
        element.classList.remove("hide");
      } else {
        //hide other elements
        element.classList.add("hide");
      }
    }
  });
}

//Search button click
document.getElementById("search").addEventListener("click", () => {
  //initializations
  let searchInput = document.getElementById("search-input").value;
  let elements = document.querySelectorAll(".product-name");
  let cards = document.querySelectorAll(".card");

  //loop through all elements
  elements.forEach((element, index) => {
    //check if text includes the search value
    if (element.innerText.includes(searchInput.toUpperCase())) {
      //display matching card
      cards[index].classList.remove("hide");
    } else {
      //hide others
      cards[index].classList.add("hide");
    }
  });
});

//Initially display all products
window.onload = () => {
  filterProduct("all");
};

Теперь ваш поиск и фильтр по продукту готовы. Надеюсь, вам понравился урок.

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