HTML code to draw a vertical line between two div tags-HTML Tutorial-php.cn

Home

Web Front-end

HTML Tutorial

HTML code to draw a vertical line between two div tags

小云云

Mar 03, 2018 am 09:55 AM

html

When I was drawing an interface recently, I encountered a requirement: draw a vertical line in the interface, and the height of this vertical line needs to automatically occupy the entire parent p (that is, the height of this vertical line and two The higher one in p is equal to the height).

Usually we draw a horizontal line and just use the label

. When we draw a vertical line, we find that the label cannot be found. After searching for information on the Internet, it is generally recommended to use js. I was paranoid and wanted to use pure CSS, and finally found a solution. I will share my approach below.

Add one more p to the two sub-p, and set the left (right) border to be visible, and use padding-bottom|margin-bottom to offset the positive and negative values principle. For example, setting padding-bottom:1600px; margin-bottom:-1600px; we can understand that: padding can be used to expand the outer label but margin is not used to expand the outer label. That is, when padding-bottom is used to expand the height of the outer label, the outer label uses overflow:hidden; to hide the excess height, so that the height can be aligned with the highest column; and margin is related to the module layout, and margin can offset the padding The stretched box allows the layout to start from the content section.

The following is the code:

body{  
    margin-top:100px;  
    margin-left:200px;  
}  
.mainp{  
    width:900px;  
    padding:10px;  
    overflow:hidden; /*关键*/  
    border:1px solid black;  
}  
.leftp{  
    float:left;  
    width:400px;  
    background-color:#CC6633;  
}  
.rightp{  
    float:right;  
    width:400px;  
    background-color:#CC66FF;  
}  
.centerp{  
    float:left;  
    width:50px;  
    border-right: 1px dashed black;  
    padding-bottom:1600px;  /*关键*/  
    margin-bottom:-1600px;  /*关键*/  
}  

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">  
<html xmlns="http://www.w3.org/1999/xhtml">  
<head>  
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />  
<title>竖线画法</title>  
<link href="../css/demo.css" rel="stylesheet" type="text/css" />  
</head>  
<body>  
    <p class="mainp">  
        <p class="leftp"><br><br><br><br><br><br></p>  
        <p class="centerp"></p>  
        <p class="rightp"><br><br><br><br><br><br><br></p>  
    </p>  
</body>  
</html>

Rendering:

By the way, write down the js idea Compare the height of the two sub-p's with the key code

which one is higher. You can also achieve the goal by choosing to make the adjacent border of the taller p visible.

The following is the js code

function myfun(){  
  var p1=document.getElementById("content");  
  var p2=document.getElementById("side");  
  var h1=p1.offsetHeight;  
  var h2=p2.offsetHeight;  
    if(h1>h2){  
        p1.style.borderRight="1px dashed #B6AEA3";  
    }else{  
        p2.style.borderLeft="1px dashed #B6AEA3";  
  }  
}

Related recommendations:

How to make the DIV tag in Is the P tag centered horizontally and vertically?

html Tips: td, the content in the div tag does not wrap

js method of assigning values to label tags and div tags

The above is the detailed content of HTML code to draw a vertical line between two div tags. For more information, please follow other related articles on the PHP Chinese website!

Statement

The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

HTML超文本标记语言--超在那里？（文档分析）Aug 02, 2022 pm 06:04 PM

本篇文章带大家了解一下HTML（超文本标记语言），介绍一下HTML的本质，HTML文档的结构、HTML文档的基本标签和图像标签、列表、表格标签、媒体元素、表单，希望对大家有所帮助！

html和css算编程语言吗Sep 21, 2022 pm 04:09 PM

不算。html是一种用来告知浏览器如何组织页面的标记语言，而CSS是一种用来表现HTML或XML等文件样式的样式设计语言；html和css不具备很强的逻辑性和流程控制功能，缺乏灵活性，且html和css不能按照人类的设计对一件工作进行重复的循环，直至得到让人类满意的答案。

web前端笔试题库之HTML篇Apr 21, 2022 am 11:56 AM

总结了一些web前端面试（笔试）题分享给大家，本篇文章就先给大家分享HTML部分的笔试题（附答案），大家可以自己做做，看看能答对几个！

总结HTML中a标签的使用方法及跳转方式Aug 05, 2022 am 09:18 AM

本文给大家总结介绍a标签使用方法和跳转方式，希望对大家有所帮助！

HTML5中画布标签是什么May 18, 2022 pm 04:55 PM

HTML5中画布标签是“<canvas>”。canvas标签用于图形的绘制，它只是一个矩形的图形容器，绘制图形必须通过脚本（通常是JavaScript）来完成；开发者可利用多种js方法来在canvas中绘制路径、盒、圆、字符以及添加图像等。

html中document是什么Jun 17, 2022 pm 04:18 PM

在html中，document是文档对象的意思，代表浏览器窗口的文档；document对象是window对象的子对象，所以可通过“window.document”属性对其进行访问，每个载入浏览器的HTML文档都会成为Document对象。

html5废弃了哪个列表标签Jun 01, 2022 pm 06:32 PM

html5废弃了dir列表标签。dir标签被用来定义目录列表，一般和li标签配合使用，在dir标签对中通过li标签来设置列表项，语法“<dir><li>列表项值</li>...</dir>”。HTML5已经不支持dir，可使用ul标签取代。

Html5怎么取消td边框May 18, 2022 pm 06:57 PM

3种取消方法：1、给td元素添加“border:none”无边框样式即可，语法“td{border:none}”。2、给td元素添加“border:0”样式，语法“td{border:0;}”，将td边框的宽度设置为0即可。3、给td元素添加“border:transparent”样式，语法“td{border:transparent;}”，将td边框的颜色设置为透明即可。

See all articles