absolute | 易学教程

使用VUE分分钟写一个验证码输入组件

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本文转载于: 猿2048 网站⇨ https://www.mk2048.com/blog/blog.php?id=hc0c1iiccb 效果先来看波完成效果图预览地址 github地址 npm地址需求输入4位或6位短信验证码，输入完成后收起键盘实现步骤第一步布局排版 <div class="security-code-wrap"> <label for="code"> <ul class="security-code-container"> <li class="field-wrap" v-for="(item, index) in number" :key="index"> <i class="char-field">{{value[index] || placeholder}}</i> </li> </ul> </label> <input ref="input" class="input-code" @keyup="handleInput($event)" v-model="value" id="code" name="code" type="tel" :maxlength="number" autocorrect="off" autocomplete="off" autocapitalize="off"> </div> 使用li元素来模拟输入框的显示

CSS z-index not working (position absolute)

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I am trying to make the black div (relative) above the second yellow one (absolute). The black div 's parent has a position absolute, too. #relative { position: relative; width: 40px; height: 100px; background: #000; z-index: 1; margin-top: 30px; } .absolute { position: absolute; top: 0; left: 0; width: 200px; height: 50px; background: yellow; z-index: 0; } <div class="absolute"> <div id="relative"></div> </div> <div class="absolute" style="top: 54px"></div> Expected Result: Remove z-index:0; from .absolute . Updated fiddle here. This is because of the Stacking Context , setting a z-index will

web page elements overlapping each other even when using percentage values in css

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可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have a page with structure like this. I want to divide the page into 6 sections so I have made 6 outer div s. <body> <div id="header"> <img /> </div> <div id="pageTitle"> title of page </div> <div id="section1" class="section"> <div class="section-title"> section 1 </div> <form> <input /> </form> </div> <div id="section2" class="section"> <div class="section-title"> section 2 </div> <form> <input /> </form> </div> <div id="section3" class="section"> <div class="section-title"> section 3 </div> <form> <input /> </form> </div> <div id="nav">

React Native absolute positioning horizontal centre

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问题 It seems that with position:absolute in use an element cannot be centred using justifyContent or alignItems . There's a workaround to use marginLeft but does not display the same for all devices even using dimensions to detect height and width of device. bottom: { position: 'absolute', justifyContent: 'center', alignItems: 'center', top: height*0.93, marginLeft: width*0.18, }, bottomNav: { flexDirection: 'row', }, 回答1: Wrap the child you want centered in a View and make the View absolute.

Is there any way for “position:absolute” div to retain relative width?

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Let's say I have two divs, one inside the other, like so: <html> <body> <div id="outer" style="width:50%"> <div id="inner" style="width:100%"> </div> </div> </body> </html> Right now, the inner div has a width of 100% of 50% of the screen size, or 50% of the screen size. If I were to change the inner div to position absolute, like this: <html> <body> <div id="outer" style="width:50%"> <div id="inner" style="position:absolute;width:100%"> </div> </div> </body> </html> In this case the inner div takes up 100% of the screen space, because its position is set to absolute. My question is this: Is

Problems on creation of executable file from python with Nuitka

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可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am trying to create an exe file from a python file that it will be executable to other PCs. I came across Nuitka.I use Python 2.7.11 Anaconda 2.3.0 (32 bit) on Windows 8.1 64 bit. Because of my work specs i can't update my Python version!!! I have download nuitka 0.5.19 for python 2.7. At first i used the simple line nuitka --exe python.py and i get an executable (with some warnings) that runs only in PCs that had install Python (obvious!). Then i used nuitka --standalone python.py in order to include the libruries and i got a major list

vue实现轮播效果

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vue实现轮播效果效果如下：（不好意思，图有点大；）功能：点击左侧图片，右侧出现相应的图片；同时左侧边框变颜色。代码如下：（也可以直接下载文件） <!DOCTYPE html> <html lang = "en" > <head> <meta charset = "utf-8" > <title> test </title> <script src = "vue.js" ></script> </head> <body> <div id = "app" >  <div class = "leftlList " > <div v-for = "(leftImg,index) in leftImgs" : key = "index" > <label : key = "index + 'A'" > {{ index + 1 }} </label> <div @ click = "clickImg(index)" : key = "index + 'B'" class = "img" : class = "[leftIndex == index?'listImgActived': '']" > <img : src = "leftImg.url" >  </div> </div> </div>

关于position的relative和absolute分别是相对于谁进行定位的

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position:absolute; 他的意思是绝对定位，他是参照浏览器的左上角，配合TOP、RIGHT、BOTTOM、LEFT(下面简称TRBL)进行定位，在没有设定TRBL，默认依据父级的做标原始点为原始点。如果设定TRBL并且父级没有设定position属性，那么当前的absolute则以浏览器左上角为原始点进行定位，位置将由TRBL决定。 relative没有跳出文本流，定位是相对于父级和兄弟节点。absolute跳出文本流，是相对于父级且带有定位，如果父级没有定位属性，那么就会往上一级再找是否带定位，找到顶级之后如果还没有定位，就以body定位。链接：https://www.jianshu.com/p/de4a93429e00

position:absolute 按钮左右分布：left:0 和 right:0 以及雪碧图

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问题：把两个a标签按钮垂直居中，并且分别把两个按钮放在水平左右两边顶部1，祖父元素设定：position:relative2，把.arrow 设定上下垂直居中 position:absolute; top:50%; margin-top:-20px;3，因为父级元素已经进行垂直居中定位，所以，只要把 a 标签进行左右定位即可　　　a标签公共样式.item{ position:absolute;}　　　这里如果设置left:0，那么.right设置right:0;就无效，如果同时设置:left:0 和 right:0 会先执行left先。　　所以这里不设置，直接到.left 和 .right中各自设置left:0; 和 right:0;最合适4，.left { left:0 } .right { right:0 }==============================读取雪碧图中的指定图片：公共样式 .item 设置了背景图片： background: url('../img/ui-slider-arrow.png') no-repeat 0 0;如果有多个 .item 需要设置，那么直接修改background-position: 0 -20px; 即可。雪碧图的读取基本都是负数坐标。============================== <!----对两个 a

HTML之Position用法

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position的四个属性值： 1.relative 2.absolute 3.fixed 4.static 下面分别讲述这四个属性。 <div id="parent"> </div> 1. relative relative属性相对比较简单，我们要搞清它是相对哪个对象来进行偏移的。答案是它本身的位置。在上面的代码中，sub1和sub2是同级关系，如果设定sub1一个relative属性，比如设置如下CSS代码： #sub1 { } 我们可以这样理解，如果不设置relative属性，sub1的位置按照正常的文档流，它应该处于某个位置。但当设置sub1为的position为relative后，将根据top，right，bottom，left的值按照它理应所在的位置进行偏移，relative的“相对的”意思也正体现于此。对于此，您只需要记住，sub1如果不设置relative时它应该在哪里，一旦设置后就按照它理应在的位置进行偏移。随后的问题是，sub2的位置又在哪里呢？答案是它原来在哪里，现在就在哪里，它的位置不会因为sub1增加了position的属性而发生改变。如果此时把sub2的position也设置为relative，会发生什么现象？此时依然和sub1一样，按照它原来应有的位置进行偏移。注意relative的偏移是基于对象的margin的左上侧的。 2.

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