fixed | 易学教程

当fixed 遇上 translate时，fixed参照物发生改变。

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今日帮同事解决一个问题，发现元素为fixed，并利用translate设置了元素居中，当父元素滚动时，这个设置了fixed元素居然不会固定在浏览器上，而是跟着滚动了，后来查了一下才知道。原来当fixed元素的父元素有transform属性时，fixed会降级了absolute。鑫大神总结的非常好： https://www.cnblogs.com/norcoA3/p/6492614.html 来源： https://my.oschina.net/u/3757195/blog/3134569

Bootstrap <div class=“navbar navbar-fixed-top”>

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I am trying to built a site with Bootstrap. So far everything is going pretty much as planned. I would like a fixed navbar and I am using the built in function: <div class="navbar navbar-fixed-top"> This is great and just what I need BUT I would like the navigation and title to start at the same place as the container instead of all the way to the left/right (still having the navbar going 100% in width. I have tried to put a container inside the navbar which was not the correct solution :-) example <div class="navbar navbar-fixed-top"> <div class="navbar-inner"> <div class="container"> <button

IE6的JS下fixed的常见解决办法

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- IE7已经支持position:fixed了，而我们的IE6呢？还继续使用js事件？消耗资源，破坏结构，画面闪耀。第一种方法：纯CSS 目前网上有的比较多的是这种解决方案（纯CSS）：代码如下: html{overflow:hidden;} body{height:100%;overflow:auto;} #rightform form{position:absolute;right:30px;top50px;} 这个方法有一个bug未解决：在IE6下会把所有position:absolute都变成“浮动”的元素；还有使用js方法滚动滚动条时会出现对象闪烁，如下方法结合了CSS和js的办法，解决了以上的问题。代码如下: <!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>IE6 fixed</title> <style type=

修正IE6不支持position:fixed的bug

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众所周知IE6不支持position:fixed，这个bug与IE6的双倍margin和不支持PNG透明等bug一样臭名昭著。前些天我做自己的博客模板的时候，遇到了这个问题。当时就简单的无视了IE6——尽管有几个使用IE6的朋友，一起BS我……但是对于大项目或商业网站，如果有用到这个属性的时候，是不可能直接无视的。你是如何让position:fixed在IE6中工作的？本文所使用的技巧是用了一条Internet Explorer的CSS表达式(expression)。你不可以直接使用该表达式，因为它可能会因为缓存而不更新。解决这一点的最简单的方式是使用eval包裹你的语句。如何解决“振动”的问题？显然IE有一个多步的渲染进程。当你滚动或调整你的浏览器大小的时候，它将重置所有内容并重画页面，这个时候它就会重新处理css表达式。这会引起一个丑陋的“振动”bug，在此处固定位置的元素需要调整以跟上你的(页面的)滚动，于是就会“跳动”。解决此问题的技巧就是使用background-attachment:fixed为body或html元素添加一个background-image。这就会强制页面在重画之前先处理CSS。因为是在重画之前处理CSS，它也就会同样在重画之前首先处理你的CSS表达式。这将让你实现完美的平滑的固定位置元素！这个方案并不是我提供的

fixed 失效

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1. 父元素设置 transform 属性后，会导致 position： fixed 失效。 2. 设置以下属性也会影响 fixed 属性。 -webkit-perspective: 1000;-moz-perspective: 1000;-ms-perspective: 1000;perspective: 1000; 来源： https://www.cnblogs.com/echolife/p/11936986.html

iOS7 position:fixed; works ugly

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I know iScroll and I already used jQuery mobile for a long time and I know both of them fixed this problem but I want to do it myself and not include a large framework for this. My question is how did jQuery Mobile fixed this position:fixed; problem on iOS devies? Currently all my fixed positioned elements will only change the position if the scroll is finished, but it should always appear fixed at the top and not only at the end of the scroll. I had the same problem. I had a fixed element over the body and this was very buggy. And for me height:auto; instead of height:100% worked. Full code:

定位的方法

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定位 position 这五个属性都是css属性方向的属性值都是length 比如50px Position的属性值 relative 相对定位：相对自己原来的位置进行定位。且还占用之前的空间。 absolute 绝对定位：如果一个元素设置了absolute/fixed，它将向父级查找是否有position属性，如果有就以父级为参考点，如果没有就继续向父级的父级查找，如果有position属性就以父级的父级为参考点，如果没有就按照这种方式继续向上查找，直到找到为止，如果一直都没有就以body窗口为参考点。简称子绝父相。 Fixed 固定定位 Absolute和fixed一旦设置了，该元素就会脱离文档流。 Margin 一个元素设置了margin，属性值是length。总共有四个margin分别是margin-top，margin-right，margin-bottom，margin-left。 Margin的简写 Margin:10px 20px 30px 40px; 代表上右下左。 Margin:10px 20px 30px 代表上左右下。 Margin:10px 20px; 代表上下左右 Margin：10px; 代表上右下左。 Padding和margin的简写一样。标准流下，垂直方向的margin不叠加，以最大的为准。如果不在标准流下

Why are Java arrays fixed length?

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int[] array = new int[10]; // Length is fixed when the array is created. The length of an array is established when the array is created. After creation, its length is fixed. Why does it have to be so? As other answers have noted, fixed size is part of the definition, and you'd have to talk to the original authors to find the truth. But as a general point, it is significantly more complex to implement a variable-length container, and there are a number of strategies for achieving it under the hood (linked list, memory re-allocation ...). Had the authors defined arrays to be variable-length

Fixed element that pushes back content

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I a looking for a way to have a fixed element at the top of the page that would change in height according to the page width and that would also push back the content bellow. I've managed something so far but I'm hoping for a much cleaner solution. What I did is to have 2 top elements with the same content. One is set to position fixed, and the other one to relative, but with no opacity ... #top-1 { position: fixed; background-color:#fff} #top-2 {position: relative; opacity:0;} #content { background-color: #FFF; background-color:#CCC } I've set up an example here http://jsfiddle.net/q3G7F/6/

scrollTo() with ipad and fixed element [duplicate]

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问题 This question already has answers here : Closed 7 years ago . Possible Duplicate: Mobile Safari bug on fixed positioned button after scrollTop programmatically changed…? We're trying to put a fixed navigation to scroll the different sections of a page. We're using jquery scrollTo(). Only on ipad, the first click pass without problem, but after this one, the on the navigation seems to be disabled. If we scroll, even a little bit, with the hand, then the link's work again. Here is the code :