JavaScript/jQuery 如何使图像以重叠滚动的形式出现

JavaScript/jQuery 如何使图像以重叠滚动的形式出现

在本文中,我们将讨论如何通过滚动一个图像使另一个图像出现。当我们滚动一个图像时,会有一个图像在屏幕上显示出来。当我们点击屏幕上显示的任何按钮时,会显示一个图像作为加载过程的一部分,然后这些操作也会显示在显示屏上。在这两种方法中,我们将了解如何滚动图像并显示另一页。我们将了解如何使用jQuery在显示屏上正确地通过滚动呈现图像。

方法一:滚动时隐藏图像

我们通过创建一个函数来滚动图像、增加和减小图像的尺寸。当我们向上滚动页面时,图像将向上滚动。

示例1: 这个示例演示了一个图像在滚动过程中重叠显示的效果。在这里,我们在滚动时隐藏了图像。

HTML

<!DOCTYPE html> 
<html lang="en"> 
<head> 
    <meta charset="UTF-8"> 
    <meta http-equiv="X-UA-Compatible"
          content="IE=edge"> 
    <meta name="viewport" 
          content= "width=device-width,  
                    initial-scale=1.0"> 
    <title>Image Scrolling</title> 
    <script src= 
"https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"> 
    </script> 
    <style> 
        .img{ 
            width: 1000px; 
            height: 1000px; 
        } 
    </style> 
</head> 
<body> 
    <h1 style="color:green" class="GFG"> 
        GeeksForGeeks 
    </h1> 
    <h2>Image Scrolling</h2> 
    <div style="margin-top:150px;"> 
        Please scroll down slowly to see effect. 
    </div> 
    <div style="margin-top:150px;"> 
        Please scroll down slowly to see effect. 
    </div> 
    <div class="myimgDiv"> 
        <img class="img" 
             src= 
"https://media.geeksforgeeks.org/wp-content/uploads/20230128220855/download.jpg" 
            alt="Manager" 
            class="img-responsive img-thumbnail"/> 
    </div> 
    <div style="margin-top:100px;"> 
        Please scroll up slowly to see effect. 
    </div> 
    <div style="margin-top:100px;"> 
        Please scroll up slowly to see effect. 
    </div> 
  
    <script> 
        (window).scroll(function() { 
            if ((this).scrollTop()>700){ 
                ('.myimgDiv').hide(1000); 
            } 
            else{     
                (document).ready(function() { 
                    var images = ('#scrolling-container img'); 
                    var width = images[0].width; 
                    var currentImage = 0; 
  
                    setInterval(function() { 
                    currentImage++; 
                    if (currentImage === images.length) { 
                      currentImage = 0; 
                    } 
  
                        ('#scrolling-container').animate({ 
                          scrollLeft: currentImage * width 
                        }, 1000); 
                    }, 2000); 
                }); 
  
                $('.myimgDiv').show(1000); 
            } 
        }); 
    </script> 
</body> 
</html>

输出:

JavaScript/jQuery 如何使图像以重叠滚动的形式出现

方法2: 通过设置在显示屏上显示的图片来改变页面。

在这种方法中,我们将创建两个页面,并在这些页面之间添加图像滚动。当我们点击一个按钮/链接时,一个滚动图片将在屏幕上显示一段时间。我们直接将第一个页面移动到第二个页面的标题,反之亦然。

示例2: 此示例演示了一个图像在滚动时覆盖另一个图像的外观。在这里,通过设置在显示屏上显示的图片来改变页面。

HTML

<!DOCTYPE html> 
<html lang="en"> 
  
<head> 
    <meta charset="UTF-8"> 
    <meta http-equiv="X-UA-Compatible" 
          content="IE=edge"> 
    <meta name="viewport" 
          content= "width=device-width,  
                    initial-scale=1.0"> 
    <title>Transition</title> 
  
    <style> 
        .loader { 
            position: absolute; 
            width: 100%; 
            height: 100vh; 
            z-index: 99; 
            left: -100%; 
            transition: .1s; 
        } 
  
        img { 
            position: absolute; 
            left: 15%; 
            top: -2%; 
            width: 22%; 
            height: 30%; 
        } 
  
        .page1 { 
            position: absolute; 
            width: 100%; 
            height: 100vh; 
        } 
  
        .page2 { 
            position: absolute; 
            width: 100%; 
            height: 100vh; 
            display: none; 
        } 
  
        h4 { 
            margin-left: 15%; 
            font-size: 25px; 
            color: green; 
  
        } 
  
        a { 
            margin-left: 16.9%; 
            font-size: 15px; 
            padding: 4px 8px; 
            border: 2px solid black; 
            border-radius: 10px; 
            font-weight: bold; 
            cursor: pointer; 
        } 
  
        a:hover { 
            color: white; 
            background-color: black; 
        } 
  
        .gfg { 
            margin-left: 280px; 
            margin-top: -20px; 
            font-size: 20px; 
        } 
    </style> 
</head> 
<body> 
    <div class="loader" 
         id="loader"> 
        <img src= 
"https://media.geeksforgeeks.org/wp-content/uploads/20230128220855/download.jpg"
             alt="gfg_img"> 
    </div> 
  
    <div class="page1" id="page1"> 
        <h4> GeeksforGeeks 1st </h4> 
        <h5 class="gfg">Image Scrolling</h5> 
        <a onclick="appearP2() ">Image Scroll</a> 
    </div> 
    <div class="page2" id="page2"> 
        <h4> GeeksforGeeks 2nd </h4> 
        <h5 class="gfg">Image Scrolling</h5> 
        <a onclick="appearP1() ">Image Scroll</a> 
    </div> 
    
    <script> 
        
        // Function for page one  
        function appearP2() { 
  
            // Code for loader and both pages  
            var loader = document.getElementById('loader'); 
            var page1 = document.getElementById('page1'); 
            var page2 = document.getElementById('page2'); 
            loader.style.left = "0"; 
  
            // Timeout method which will display our  
              // next page and block first page  
            setTimeout(function () { 
                loader.style.left = "-100%"; 
                page1.style.display = "none"; 
                page2.style.display = 'block'; 
                
                // Set time 2000 to show transition  
            }, 2000) 
        } 
  
        // Function for page two  
        function appearP1() { 
              
              // Code for loader and both pages  
            var loader = document.getElementById('loader'); 
            var page1 = document.getElementById('page1'); 
            var page2 = document.getElementById('page2'); 
            loader.style.left = "0"; 
  
            // Timeout method which will display our next page 
            // and block second page  
            setTimeout(function () { 
                loader.style.left = "-100%"; 
                page1.style.display = "block"; 
                page2.style.display = 'none'; 
  
                // Set time 2000 to show transition  
            }, 2000) 
        } 
    </script> 
</body> 
</html>

输出:

JavaScript/jQuery 如何使图像以重叠滚动的形式出现

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