Bootstrap 4 | Scrollspy

Sometimes while designing the website, we include some attractive features which makes website eye-catching. One of the features is Bootstrap scrollspy which target the navigation bar contents automatically on scrolling the area.

Create scrollspy: The data-spy=”scroll” and data-target=”.navbar” attribute is used to create scrollspy element. The scrollspy is used to update the navigation links when scrolling the page.

Example:

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<!DOCTYPE html> 
<html lang="en"
<head
    <title>Scrollspy</title
      
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
  
    <link rel="stylesheet" href=
      
    <script src=
    </script>
      
    <script src=
    </script>
      
    <script src=
    </script>
      
     <style>
        body {
            position: relative; 
        }
    </style>
</head
  
<body data-spy="scroll" data-target=".navbar" data-offset="50"
      
    <nav class="navbar navbar-expand-sm bg-success navbar-dark fixed-top">
          
        <ul class="navbar-nav">
            <li class="nav-item">
                <a class="nav-link" href="#content1">Home</a>
            </li>
                  
            <li class="nav-item">
                <a class="nav-link" href="#content2">Algo</a>
            </li>
                  
            <li class="nav-item">
                <a class="nav-link" href="#content3">DS</a>
            </li>
                  
            <li class="nav-item dropdown">
                <a class="nav-link dropdown-toggle" href="#"
                        id="navbardrop" data-toggle="dropdown">
                    Languages
                </a>
                          
                <div class="dropdown-menu">
                    <a class="dropdown-item" href="#content4">C</a>
                    <a class="dropdown-item" href="#content5">C++</a>
                </div>
            </li
        </ul>
    </nav>
      
    <div id="content1" class="container-fluid bg-primary" 
            style="height:250px; padding-top:80px;">
        <h1>GeeksforGeeks</h1>
        <p>A computer science portal for geeks</p>
    </div>
          
    <div id="content2" class="container-fluid bg-light" 
            style="height:250px; padding-top:80px;">
        <h1>Algorithm Analysis</h1>
        <p>A stepwise procedure to solve a problem</p>
    </div>
          
    <div id="content3" class="container-fluid bg-warning" 
            style="height:250px; padding-top:80px;">
        <h1>Data Structure</h1>
        <p>
            Data structure is a perticular way to organizing the data
            in computer memory so that it can be used efficiently.
        </p>
    </div>
      
    <div id="content4" class="container-fluid bg-info" 
            style="height:250px; padding-top:80px;">
        <h1>C Languages</h1>
        <p>
            C is a computer science programming language
        </p>
    </div>
      
    <div id="content5" class="container-fluid bg-dark" 
            style="height:250px; padding-top:80px;">
        <h1>C++ Languages</h1>
        <p>
            C++ is the extension of C language.
        </p>
    </div>
</body
  
</html>                    

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Output:


Scrollspy Vertical Menu: It creates vertical navigation menu and the content are display according to the menu.

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<!DOCTYPE html> 
<html lang="en"
<head
    <title>Scrollspy</title
      
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
  
    <link rel="stylesheet" href=
      
    <script src=
    </script>
      
    <script src=
    </script>
      
    <script src=
    </script>
      
    <style>
        body {
            position: relative;
        }
        ul.nav-pills {
            top: 20px;
            position: fixed;
        }
        div.col-8 div {
            height: 500px;
        }
    </style>
</head
  
<body data-spy="scroll" data-target="#GFG_scrollspy" data-offset="1"
      
    <div class="container-fluid">
        <div class="row">
              
            <nav class="col-sm-4 col-4" id="GFG_scrollspy">
          
                <ul class="nav nav-pills flex-column">
                    <li class="nav-item">
                        <a class="nav-link active" href="#content1">
                            Home
                        </a>
                    </li>
                          
                    <li class="nav-item">
                        <a class="nav-link" href="#content2">
                            Algo
                        </a>
                    </li>
                          
                    <li class="nav-item">
                        <a class="nav-link" href="#content3">
                            DS
                        </a>
                    </li>
                          
                    <li class="nav-item dropdown">
                        <a class="nav-link dropdown-toggle" href="#"
                                id="navbardrop" data-toggle="dropdown">
                            Languages
                        </a>
                                  
                        <div class="dropdown-menu">
                            <a class="dropdown-item"
                               href="#content4">C</a>
  
                            <a class="dropdown-item" 
                               href="#content5">C++</a>
                        </div>
                    </li
                </ul>
            </nav>
      
            <div class="col-sm-8 col-8">
                <div id="content1" class="container-fluid bg-primary" 
                            style="height:250px; padding-top:80px;">
                    <h1>GeeksforGeeks</h1>
                    <p>A computer science portal for geeks</p>
                </div>
          
                <div id="content2" class="container-fluid bg-light" 
                            style="height:250px; padding-top:80px;">
                    <h1>Algorithm Analysis</h1>
                    <p>A stepwise procedure to solve a problem</p>
                </div>
                      
                <div id="content3" class="container-fluid bg-warning" 
                            style="height:250px; padding-top:80px;">
                    <h1>Data Structure</h1>
                    <p>
                        Data structure is a perticular way to organizing
                        the data in computer memory so that it can be
                        used efficiently.
                    </p>
                </div>
                  
                <div id="content4" class="container-fluid bg-info" 
                            style="height:250px; padding-top:80px;">
                    <h1>C Languages</h1>
                    <p>
                        C is a computer science programming language
                    </p>
                </div>
                  
                <div id="content5" class="container-fluid bg-dark" 
                            style="height:250px; padding-top:80px;">
                    <h1>C++ Languages</h1>
                    <p>
                        C++ is the extension of C language.
                    </p>
                </div>
            </div>
        </div>
    </div>
</body
  
</html>                                

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Output:



My Personal Notes arrow_drop_up

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