Fix the position of div through css/js_html/css_WEB-ITnose
1: Let’s take a look at using css first. You need to write expressions in css, but it flashes and flashes. Assign the variable "ignoreMe", and "document.documentElement.scrollTop? document.documentElement.scrollTop: document.body.scrollTop" (this is a bug in IE).
1 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> 2 <HTML> 3 <HEAD> 4 <TITLE> css test </TITLE> 5 <style> 6 #LoadingStatus{ 7 position:fixed !important; 8 position:absolute; 9 top:100px;10 top: expression( ( 100 + ( ignoreMe = document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop ) ) + 'px' );11 margin:0 0 0 -110px;12 width:220px;height:19px;13 left:50%;14 text-align:center;15 border:1px solid red;16 }17 </style>18 </HEAD>19 <BODY>20 <div id="LoadingStatus" style="display:none;"> loading...</div>21 <div style="height:1024px">22 <input type="button" onclick="document.getElementById('LoadingStatus').style.display=''" value='显示loading' />23 </div> 24 <div>25 <input type="button" onclick="document.getElementById('LoadingStatus').style.display=''" value='显示loading' />26 </div>27 </BODY>28 </HTML>2: Written in JS, it can actually be applied to css. It is no different from the above. It should be noted that under FF, the upper left and upper right are still floating. Under IE, everything is fixed, but flickering. Which should be used with caution.
1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 2 <HTML> 3 <HEAD> 4 <TITLE>JAVASCRIPT</TITLE> 5 <META HTTP-EQUIV="Content-Type" CONTENT="text/html" charset="UTF-8"> 6 </HEAD> 7 <style> 8 <!-- 9 .div {10 position: absolute;11 border: 2px solid red;12 background-color: #EFEFEF;13 line-height:90px;14 font-size:12px;15 z-index:1000;16 }17 -->18 </style>19 <BODY>20 <div id="Javascript.Div1" class="div" style="width: 240px; height:90px" align="center">正中...</div>21 <SCRIPT LANGUAGE="JavaScript">22 function sc1(){23 document.getElementById("Javascript.Div1").style.top=24 document.documentElement.scrollTop+(document.documentElement.clientHeight-document.getElementById("Javascript.Div1").offsetHeight)/2+"px"25 document.getElementById("Javascript.Div1").style.left=26 document.documentElement.scrollLeft+(document.documentElement.clientWidth-document.getElementById("Javascript.Div1").offsetWidth)/2+"px";27 }28 </SCRIPT>29 <div id="Javascript.Div2" class="div" style="width: 240px; height:90px;" align="center">左上...</div>30 <SCRIPT LANGUAGE="JavaScript">31 function sc2(){32 document.getElementById("Javascript.Div2").style.top=document.documentElement.scrollTop;33 document.getElementById("Javascript.Div2").style.left=document.documentElement.scrollLeft;34 }35 </SCRIPT>36 <div id="Javascript.Div3" class="div" style="width: 240px; height:90px;" align="center">左下...</div>37 <SCRIPT LANGUAGE="JavaScript">38 function sc3(){39 document.getElementById("Javascript.Div3").style.top=40 document.documentElement.scrollTop+document.documentElement.clientHeight-document.getElementById("Javascript.Div3").offsetHeight+"px";41 document.getElementById("Javascript.Div3").style.left=document.documentElement.scrollLeft;42 }43 </SCRIPT>44 <div id="Javascript.Div4" class="div" style="width: 240px; height:90px;" align="center">右上...</div>45 <SCRIPT LANGUAGE="JavaScript">46 function sc4(){47 document.getElementById("Javascript.Div4").style.top=document.documentElement.scrollTop;48 document.getElementById("Javascript.Div4").style.left=49 document.documentElement.scrollLeft+document.documentElement.clientWidth-document.getElementById("Javascript.Div4").offsetWidth+"px";50 }51 </SCRIPT>52 <div id="Javascript.Div5" class="div" style="width: 240px; height:90px;" align="center">右下...</div>53 <SCRIPT LANGUAGE="JavaScript">54 function sc5(){55 56 document.getElementById("Javascript.Div5").style.top=57 document.documentElement.scrollTop+document.documentElement.clientHeight-document.getElementById("Javascript.Div5").offsetHeight+"px";58 document.getElementById("Javascript.Div5").style.left=59 document.documentElement.scrollLeft+document.documentElement.clientWidth-document.getElementById("Javascript.Div5").offsetWidth+"px";60 }61 </SCRIPT>62 <SCRIPT LANGUAGE="JavaScript">63 <!--64 function scall(){65 sc1();sc2();sc3();sc4();sc5();66 }67 window.onscroll=scall;68 window.onresize=scall;69 window.onload=scall;70 //-->71 </SCRIPT>72 <div style="position: absolute; top: 0; left: 0; width: 10000px; height: 4000px;"></div>73 </BODY>74 </HTML>3: This is still written in js, but it will not flash during the scrolling process of the IE browser. The compatibility effect is very good.
1 <!DOCTYPE HTML> 2 <html> 3 <head> 4 <meta http-equiv="content-type" charset="utf-8" /> 5 <title>Js跟随滚动条移动的DIV</title> 6 </head> 7 <style type="text/css"> 8 *{margin:0;padding: 0;background-color:#000; } 9 div#con{width: 800px;margin: 0 auto;}10 div.pop{width:800px;font-size: 18px;background:yellow;padding:20px 0;margin:20px auto;border:1px solid yellow;text-align: center;color: #000;}11 p{width:800px;padding:20px 0;background:#fff;border:1px solid #000;margin:20px auto;text-align: center;}12 div.active{position: fixed;top: 100px;z-index: 100;margin: 0;_position: absolute;}13 </style>14 <body>15 <div id="con" style="height:2000px;">16 <p>我是元素p</p>17 <div id="myDiv" class="pop active">18 我是随屏幕滚动的DIV，我距离顶部高度适中为100px，修改css就可以修改该值19 </div>20 21 <p>我是元素p</p><p>我是元素p</p><p>我是元素p</p><p>我是元素p</p><p>我是元素p</p><p>我是元素p</p><p>我是元素p</p><p>我是元素p</p><p>我是元素p</p><p>我是元素p</p><p>我是元素p</p><p>我是元素p</p><p>我是元素p</p><p>我是元素p</p><p>我是元素p</p><p>我是元素p</p><p>我是元素p</p><p>我是元素p</p><p>我是元素p</p><p>我是元素p</p><p>我是元素p</p><p>我是元素p</p><p>我是元素p</p><p>我是元素p</p><p>我是元素p</p><p>我是元素p</p><p>我是元素p</p><p>我是元素p</p><p>我是元素p</p><p style="color:red;position:fixed;top:400px;">我是元素top:400px;看是否支持固定定位</p>22 </div>23 <script type="text/javascript">24 (function(){25 //if(navigator.userAgent.toLocaleLowerCase().indexOf('msie 6.0;')>1){26 if(checkFixed()){27 return ;28 }//只需对不支持固定定位的浏览器做处理29 30 //将下面需要使用的dom相关操作在scrollDiv外面提取一次，避免多次dom操作31 var fixedObj = document.getElementById("myDiv"),32 height = fixedObj.offsetHeight,//标签高度提前读取出来33 firstTop =getTop(fixedObj),//记录页面一开始标签所在位置34 timer;35 window.onscroll = function(){//这里做个延时执行，可以减少scroll执行频率36 clearTimeout(timer);37 timer = setTimeout(function(){38 scrollDiv()39 },30);40 }41 42 function scrollDiv(){43 var scrollTop = document.documentElement.scrollTop || document.body.scrollTop;44 fixedObj.style.top=(firstTop+scrollTop)+'px';45 }46 //获取元素在页面里top值47 function getTop(obj) {48 var top = 0;49 while(obj){50 top += obj.offsetTop;51 obj = obj.offsetParent;52 }53 return top;54 }55 //判断浏览器是否支持固定定位56 function checkFixed(){57 var o = document.createElement('div'),58 body = document.getElementsByTagName('body')[0],59 fig = false;60 body.insertBefore( o, body.firstChild );61 o.style.cssText ='position:fixed;top:20px;margin:0;padding:0;border:none;width:0px;height:0px;';62 fig = o.offsetTop==20;63 body.removeChild(o);64 return fig;65 }66 })()67 </script>68 </body>69 </html>
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
Is HTML easy to learn for beginners?
Apr 07, 2025 am 12:11 AM
HTML is suitable for beginners because it is simple and easy to learn and can quickly see results. 1) The learning curve of HTML is smooth and easy to get started. 2) Just master the basic tags to start creating web pages. 3) High flexibility and can be used in combination with CSS and JavaScript. 4) Rich learning resources and modern tools support the learning process.
The Roles of HTML, CSS, and JavaScript: Core Responsibilities
Apr 08, 2025 pm 07:05 PM
HTML defines the web structure, CSS is responsible for style and layout, and JavaScript gives dynamic interaction. The three perform their duties in web development and jointly build a colorful website.
Understanding HTML, CSS, and JavaScript: A Beginner's Guide
Apr 12, 2025 am 12:02 AM
WebdevelopmentreliesonHTML,CSS,andJavaScript:1)HTMLstructurescontent,2)CSSstylesit,and3)JavaScriptaddsinteractivity,formingthebasisofmodernwebexperiences.
What is an example of a starting tag in HTML?
Apr 06, 2025 am 12:04 AM
AnexampleofastartingtaginHTMLis,whichbeginsaparagraph.StartingtagsareessentialinHTMLastheyinitiateelements,definetheirtypes,andarecrucialforstructuringwebpagesandconstructingtheDOM.
Gitee Pages static website deployment failed: How to troubleshoot and resolve single file 404 errors?
Apr 04, 2025 pm 11:54 PM
GiteePages static website deployment failed: 404 error troubleshooting and resolution when using Gitee...
How to use CSS3 and JavaScript to achieve the effect of scattering and enlarging the surrounding pictures after clicking?
Apr 05, 2025 am 06:15 AM
To achieve the effect of scattering and enlarging the surrounding images after clicking on the image, many web designs need to achieve an interactive effect: click on a certain image to make the surrounding...
How to implement adaptive layout of Y-axis position in web annotation?
Apr 04, 2025 pm 11:30 PM
The Y-axis position adaptive algorithm for web annotation function This article will explore how to implement annotation functions similar to Word documents, especially how to deal with the interval between annotations...
HTML, CSS, and JavaScript: Essential Tools for Web Developers
Apr 09, 2025 am 12:12 AM
HTML, CSS and JavaScript are the three pillars of web development. 1. HTML defines the web page structure and uses tags such as, etc. 2. CSS controls the web page style, using selectors and attributes such as color, font-size, etc. 3. JavaScript realizes dynamic effects and interaction, through event monitoring and DOM operations.
