所属分类:web前端开发
滚动条是指允许用户滚动浏览网页内容的元素。它通常显示为页面侧面或底部的水平或垂直条。滚动条也称为“滚动条拇指”,它是当用户上下滚动时滚动条移动的部分。
在本文中,我们将讨论如何使用 CSS 更改滚动条的位置。我们将涵盖以下主题 -
为元素创建一个新类
定位滚动条和拇指
使用“position”属性更改滚动条的位置
首先,我们需要在 CSS 中为要更改滚动条位置的元素创建一个新类。例如,如果我们想要更改具有“scrollablediv”类的 div 的滚动条位置,我们将在 CSS 中创建以下类 -
.scrollable-div { CSS Code……. } ::-webkit-scrollbar { width: 5px; background-color: #F5F5F5; }
此类将以“scrollable-div”元素的滚动条为目标,并将宽度设置为 5 像素,背景颜色设置为浅灰色。
在这一步中,我们的目标是滚动条的拇指。拇指是滚动条中当用户滚动时移动的部分。我们将通过将以下代码添加到 CSS 类来做到这一点 -
::-webkit-scrollbar-thumb { background-color: #000000; }
这会将拇指的颜色更改为黑色。
在最后一步中,我们将使用“position”属性更改滚动条的位置。例如,如果我们想将滚动条定位在“scrollable-div”元素的左侧,我们将使用以下代码 -
.scrollable-div::-webkit-scrollbar { position: absolute; left: 0; }
这会将滚动条定位在“scrollable-div”元素的左侧。
此示例将滚动条放在 div 元素的左侧。
<html> <title>The scroll bar on the left-hand side of the div element</title> <head> <style> body{ text-align:center; } .scrollable-div{ height: 150px; width: 250px; overflow-y: auto; background-color:pink; margin:auto; padding:5px; transform: rotate(180deg); } .scrollable-div-inside { transform: rotate(-180deg); } .scrollable-div::-webkit-scrollbar { width: 5px; /* Set the width of the scrollbar */ background-color: #F5F5F5; /* Set the background color of the scrollbar */ position: absolute; right: 0; /* Position the scrollbar on the right of the element*/ } .scrollable-div::-webkit-scrollbar-thumb { background-color: #000000; /* Set the color of the thumb */ } ::-webkit-scrollbar-track { background: red; border-radius: 5px; } </style> </head> <body> <h3>The scroll bar on the Left side of the div element</h3> <div class="scrollable-div"> <div class="scrollable-div-inside">Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged.</div> </div> </body> </html>
此示例将滚动条放在 div 元素的右侧。
<html> <title>The scroll bar on the right-hand side of the div element</title> <head> <style> body{ text-align:center; } .scrollable-div{ height: 150px; width: 250px; overflow-x: auto; background-color:pink; margin:auto; padding:5px; } .scrollable-div::-webkit-scrollbar { width: 5px; /* Set the width of the scrollbar */ background-color: #F5F5F5; /* Set the background color of the scrollbar */ position: absolute; left: 0; /* Position the scrollbar on the left of the element */ } .scrollable-div::-webkit-scrollbar-thumb { background-color: #000000; /* Set the color of the thumb */ } ::-webkit-scrollbar-track { background: red; border-radius: 5px; } </style> </head> <body> <h3>The scroll bar on the right side of the div element</h3> <div class="scrollable-div">Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. </div> </body> </html>
使用 CSS 更改滚动条的位置是一个简单的过程,可以通过为元素创建一个新类、定位滚动条和滑块,然后使用“position”属性来更改滚动条的位置来完成。通过一点 CSS 知识和一些实验,我们可以为网站创建独特的自定义外观。