如何使用Javascript創建客戶端搜索欄-有解無憂

我正在嘗試使用 javascript 創建客戶端搜索欄，但我不確定如何執行此操作并使其正常運行。我試圖在不使用 PHP 的情況下創建一個，因為我沒有服務器端編程的經驗。您將如何創建一個與客戶端一起使用的程式？您是否還需要搜索結果的索引和 API？您將如何使用索引和 API？搜索欄的目標是查找出現在網頁上的術語或單詞，這正是我試圖用它實作的目標。這是為了讓用戶有機會搜索網頁中出現的文章的名稱。如果您想查看它，這是我當前的代碼：https : //jsfiddle.net/snt87eg9/1/

<div class="topnav">
  <a class="active" href="#home">Home</a>
  <a href="#news">News</a>
  <a href="#contact">Contact</a>
  <a href="#about">About</a>
  <div class="search-container">
    <form action="/action_page.php">
      <input type="text" placeholder="Search.." name="search">
      <button type="submit"><i class="fa fa-search"></i></button>
    </form>
  </div>
</div>



<div class="header">
<div id ="header">
<h2 style="text-indent: 1em; font-family: Helvetica; color: blue;">Articles</h2>
</div></div><br>


<div class="row">
  <div class="leftcolumn">
    <div class="card">
    <div id="Title">
      <a href="#"><h2>Article 1</h2></a>
      <h5>Date</h5>
      
      <p>Some text over there.,.. </p>
    </div>
    </div> 
    </div>
    </div>
    
  <div class="row">
  <div class="card">
  <div id="Title2">
    <a href="#"><h2>Article 2</h2></a>
    <h5>Date</h5>
    <p> Some text over here..... </p>

    </div>
    </div> 
    </div>
    ```

uj5u.com熱心網友回復：

你需要一種選擇搜索欄、文章和文章標題的方法，假設你給類文章和文章標題并給搜索欄 id="searchbar"

檔案應如下所示：

<div class="topnav">
        <a class="active" href="#home">Home</a>
        <a href="#news">News</a>
        <a href="#contact">Contact</a>
        <a href="#about">About</a>
        <div class="search-container">
            <form action="/action_page.php">
                <input type="text" placeholder="Search.." name="search" id="searchbar">
                <button type="submit"><i class="fa fa-search"></i></button>
            </form>
        </div>
    </div>



    <div class="header">
        <div id="header">
            <h2 style="text-indent: 1em; font-family: Helvetica; color: blue;">Articles</h2>
        </div>
    </div><br>


    <div class="row article">
        <div class="leftcolumn">
            <div class="card">
                <div id="Title">
                    <a href="#">
                        <h2 class="article-title">Article 1</h2>
                    </a>
                    <h5>Date</h5>

                    <p>Some text over there.,.. </p>
                </div>
            </div>
        </div>
    </div>

    <div class="row article">
        <div class="card">
            <div id="Title2">
                <a href="#">
                    <h2 class="article-title">Article 2</h2>
                </a>
                <h5>Date</h5>
                <p> Some text over here..... </p>

            </div>
        </div>
    </div>

以下是過濾掉您在搜索欄中所寫內容的方法：

<script>
       $('#searchbar').keyup(function(){
        let articles = $('.article'); //get all elements with 
        let keyword = $(this).val().toLowerCase(); //get the content of the searchbar
        if(keyword == "") //show all elements if searchbar is empty
            articles.show();
        else{ //else loop through articles and check if the keyword is in the title div 
            articles.each(function(element) {
                let title = $(this).find('.article-title').text().toLowerCase();
                (title.indexOf(keyword) >= 0) ? $(this).show() : $(this).hide();
            });
        }
    });

    </script>

該腳本使用 jQuery ，如果您還沒有匯入它，您可以將它放在腳本之前：

<script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>

uj5u.com熱心網友回復：

我只是花時間做一個客戶端搜索javascript函式。但是，如果您不太熟悉 javascript，請嘗試在實作此類事情之前多學習一點。

$(document).ready(function() {
  $("#header").hide().fadeIn(2000);
});

$(document).ready(function() {
  $("#title").hide().fadeIn(2000);
});

$(document).ready(function() {
  $("#footer").hide().fadeIn(2000);
});

function searchInArticles(word) {
  const articles = document.querySelectorAll(".card");

  articles.forEach(article => {
    if (article.innerHTML.includes(word)) {
      article.style.display = "block";
      article.scrollIntoView();
    } else {
      article.style.display = "none";
    }
  })
}

searchInArticles("Yes");
//searchInArticles("Some");

/* Add a gray background color with some padding */

body {
  font-family: Arial;
  padding: 20px;
  background: #32cd32;
}


/* Header/Blog Title */

.header {
  padding: 30px;
  font-size: 40px;
  text-align: center;
  background: #7df9ff;
}


/* Create two unequal columns that floats next to each other */


/* Left column */

.leftcolumn {
  float: left;
  width: 100%;
}


/* Add a card effect for articles */

.card {
  background-color: #87ceeb;
  padding: 20px;
  margin-top: 20px;
}


/* Clear floats after the columns */

.row:after {
  content: "";
  display: table;
  clear: both;
}


/* Footer */

.footer {
  padding: 20px;
  text-align: center;
  background: #00bfff;
  margin-top: 20px;
}

.topnav {
  overflow: hidden;
  background-color: #333;
}

.topnav a {
  float: left;
  color: #f2f2f2;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
  font-size: 17px;
}

.topnav a:hover {
  background-color: #ddd;
  color: black;
}

.topnav a.active {
  background-color: #04AA6D;
  color: white;
}


/* Responsive layout - when the screen is less than 800px wide, make the two columns stack on top of each other instead of next to each other */

@media screen and (max-width: 800px) {
  .leftcolumn,
  .rightcolumn {
    width: 100%;
    padding: 0;
  }
}

.topnav .search-container {
  float: right;
}

.topnav input[type=text] {
  padding: 6px;
  margin-top: 8px;
  font-size: 17px;
  border: none;
}

.topnav .search-container button {
  float: right;
  padding: 6px 10px;
  margin-top: 8px;
  margin-right: 16px;
  background: #ddd;
  font-size: 17px;
  border: none;
  cursor: pointer;
}

.topnav .search-container button:hover {
  background: #ccc;
}

@media screen and (max-width: 600px) {
  .topnav .search-container {
    float: none;
  }
  .topnav a,
  .topnav input[type=text],
  .topnav .search-container button {
    float: none;
    display: block;
    text-align: left;
    width: 100%;
    margin: 0;
    padding: 14px;
  }
  .topnav input[type=text] {
    border: 1px solid #ccc;
  }
}

<!DOCTYPE html>
<html>

<head>
  <meta name="viewport" content="width=device-width, initial-scale=1">

  <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
  <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">

</head>

<body>

  <!-- <a href="/path/to/file">My link</a> -->

  <div class="topnav">
    <a class="active" href="#home">Home</a>
    <a href="#news">News</a>
    <a href="#contact">Contact</a>
    <a href="#about">About</a>
    <div class="search-container">
      <form action="/action_page.php">
        <input type="text" placeholder="Search.." name="search">
        <button type="submit"><i class="fa fa-search"></i></button>
      </form>
    </div>
  </div>



  <div class="header">
    <div id="header">
      <h2 style="text-indent: 1em; font-family: Helvetica; color: blue;">Articles</h2>
    </div>
  </div><br>


  <div class="row">
    <div class="leftcolumn">
      <div class="card">
        <div id="Title">
          <a href="#">
            <h2>Article 1</h2>
          </a>
          <h5>Date</h5>

          <p>Yes text over there.,.. </p>
        </div>
      </div>
    </div>
  </div>

  <div class="row">
    <div class="card">
      <div id="Title2">
        <a href="#">
          <h2>Article 2</h2>
        </a>
        <h5>Date</h5>
        <p> Some text over here..... </p>

      </div>
    </div>
  </div>

  <div class="row">
    <div class="card">
      <div id="Title2">
        <a href="#">
          <h2>Article 2</h2>
        </a>
        <h5>Date</h5>
        <p> Some text over here..... </p>

      </div>
    </div>
  </div>

  <div class="row">
    <div class="card">
      <div id="Title2">
        <a href="#">
          <h2>Article 2</h2>
        </a>
        <h5>Date</h5>
        <p> Yes text over here..... </p>

      </div>
    </div>
  </div>

  <div class="row">
    <div class="card">
      <div id="Title2">
        <a href="#">
          <h2>Article 2</h2>
        </a>
        <h5>Date</h5>
        <p> Some text over here..... </p>

      </div>
    </div>
  </div>

  <div class="row">
    <div class="card">
      <div id="Title2">
        <a href="#">
          <h2>Article 2</h2>
        </a>
        <h5>Date</h5>
        <p> Some text over here..... </p>

      </div>
    </div>
  </div>

  <div class="row">
    <div class="card">
      <div id="Title2">
        <a href="#">
          <h2>Article 2</h2>
        </a>
        <h5>Date</h5>
        <p> Some text over here..... </p>

      </div>
    </div>
  </div>

  <div class="footer">
    <div id="footer">

    </div>
  </div>

</body>

</html>

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標籤：javascript html 查询

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