Community
Learn
Tools Library
AI Tools
Leisure
search
English
Home Web Front-end HTML Tutorial [Techniques] Tips for solving the problem of floating
and
blocking content_html/css_WEB-ITnose

[Techniques] Tips for solving the problem of floating
and
blocking content_html/css_WEB-ITnose

WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWB
WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWB
Jun 24, 2016 am 11:47 AM

Introduction

In today’s front-end pages, especially on mobile devices, it is often necessary to suspend the

or
modules Come out and follow the sliding of the page to keep it positioned at the top or bottom of the page, as shown in the figure below.

　

The "Reply Topic" module follows the floating of the page and remains suspended at the bottom of the page. The code structure is as follows. 

1 ...2 <section class='footer'>3     <div class='reply-topic'>回复主题</div>4 </section>5 ...
Copy after login

To achieve such a function, of course, we use position:fixed. However, there is a bug in using position: fixed. Take the floating

at the bottom as an example (the same goes for floating
). When the page slides to the bottom, it is out of the normal document flow due to fixed positioning. , resulting in some content being obscured. As shown below:

　

　The left side above is the problematic display, and the right side is the normal display. So, how to solve this problem? Here, I would like to put forward three of my opinions, hoping to find a better way.

　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　 When sliding to the bottom of the page content, just change the fixed positioning that would originally break away from the document flow to the relative positioning that does not break away from the document flow.

　Using scripts to solve problems is the most arduous method. Try not to use scripts if it can be solved with css, but it is still a method.

Method 2. Add padding-bottom to the body 

 1     //滚动条在Y轴上的滚动距离 2     function getScrollTop(){ 3         　　return document.body.scrollTop; 4     } 5     //文档的总高度 6     function getScrollHeight(){ 7  8         　　return document.body.clientHeight; 9     }10     //浏览器视口的高度11     function getWindowHeight(){12         var windowHeight = 0;13 　　　　 if(document.compatMode == "CSS1Compat")14 　　　　{15 　　　　 　　windowHeight = document.documentElement.clientHeight;16 　　　　}17 　　　　else18 　　   {19 　　　　　　windowHeight = document.body.clientHeight;20 　　　　}21 　　　　return windowHeight;22     }23 24     //滑动监听25 　　window.onscroll = function(){26        //滑到底部时footer定于最下方,假定<footer>的height为6027        if((getScrollHeight() - getScrollTop() - getWindowHeight()) > 61)    28            $('.footer').css('position','fixed');        29        else30            $('.footer').css('position','relative');31     }
Copy after login

Add html tag The previous padding-bottom attribute, so that the content of the normal document flow will have a distance set by padding-bottom from the bottom of the body.

The disadvantage is that considering the reuse of modules and the frequent need to merge css files after the project is launched, when other pages do not need this floating block, it will cause a burden on pages that do not require

Related knowledge
What is the purpose of the <datalist> element? What is the purpose of the <datalist> element? Mar 21, 2025 pm 12:33 PM

The article discusses the HTML &lt;datalist&gt; element, which enhances forms by providing autocomplete suggestions, improving user experience and reducing errors.Character count: 159

How do I use HTML5 form validation attributes to validate user input? How do I use HTML5 form validation attributes to validate user input? Mar 17, 2025 pm 12:27 PM

The article discusses using HTML5 form validation attributes like required, pattern, min, max, and length limits to validate user input directly in the browser.

What is the purpose of the <iframe> tag? What are the security considerations when using it? What is the purpose of the <iframe> tag? What are the security considerations when using it? Mar 20, 2025 pm 06:05 PM

The article discusses the &lt;iframe&gt; tag's purpose in embedding external content into webpages, its common uses, security risks, and alternatives like object tags and APIs.

What is the purpose of the <progress> element? What is the purpose of the <progress> element? Mar 21, 2025 pm 12:34 PM

The article discusses the HTML &lt;progress&gt; element, its purpose, styling, and differences from the &lt;meter&gt; element. The main focus is on using &lt;progress&gt; for task completion and &lt;meter&gt; for stati

What is the purpose of the <meter> element? What is the purpose of the <meter> element? Mar 21, 2025 pm 12:35 PM

The article discusses the HTML &lt;meter&gt; element, used for displaying scalar or fractional values within a range, and its common applications in web development. It differentiates &lt;meter&gt; from &lt;progress&gt; and ex

What are the best practices for cross-browser compatibility in HTML5? What are the best practices for cross-browser compatibility in HTML5? Mar 17, 2025 pm 12:20 PM

Article discusses best practices for ensuring HTML5 cross-browser compatibility, focusing on feature detection, progressive enhancement, and testing methods.

What is the viewport meta tag? Why is it important for responsive design? What is the viewport meta tag? Why is it important for responsive design? Mar 20, 2025 pm 05:56 PM

The article discusses the viewport meta tag, essential for responsive web design on mobile devices. It explains how proper use ensures optimal content scaling and user interaction, while misuse can lead to design and accessibility issues.

How do I use the HTML5 <time> element to represent dates and times semantically? How do I use the HTML5 <time> element to represent dates and times semantically? Mar 12, 2025 pm 04:05 PM

This article explains the HTML5 &lt;time&gt; element for semantic date/time representation. It emphasizes the importance of the datetime attribute for machine readability (ISO 8601 format) alongside human-readable text, boosting accessibilit

See all articles