position

background image position fixed to parent element

由 ♀尐吖头ヾ 提交于 2019-12-23 10:54:38
问题 I have a div somewhere on the page and I need to give it a background image that does not move when you scroll your browser window. This is my code so far: #mydiv { float:left; width:540px; margin:40px 0px 0px 20px; background:url(/images/myimage.jpg) no-repeat fixed 0px 0px transparent; } The problem is that my background image is positioned relative to canvas and I need it to be positioned relative to #mydiv and still not scroll. To illustrate the problem please see here http://jsfiddle.net

Jquery-UI modal form close button display position

由 丶灬走出姿态 提交于 2019-12-23 10:28:47
问题 I have a display problem with the close button on the top right corner on jquery ui modal form. I had as an example: http://jqueryui.com/dialog/#modal-form So I made: http://jsbin.com/atenac/3/edit If you click Create new user you should see that the close icon is not displayed correctly. I tested with chrome(latest) and IE9. And it is shown from the bottom right corner of the actual container. Is there a problem with the themes, or am I missing something? If you change to base cdn it works,

2019-2020-1学期 20192422 《网络空间安全专业导论》第四周学习总结

由 这一生的挚爱 提交于 2019-12-23 10:23:13
第八章 抽象数据类型与子程序 1.抽象数据类型：属性（数据和操作）明确地与特点地实现分离的容器。 数据结构：一种抽象数据类型中的复合数据域的实现。 容器：存放和其他操作其他对象的对象。 2.栈 栈和队列是抽象复合结构，二者常被同时提及，因为它们的行为完全不同，一定是因为一些历史原因。 栈是一种复合结构，只能从一端访问栈中的元素。可以在第一个位置插入元素，也可以删除第一个元素。这种设计模拟了日常生活中的很多事情。会计师称它为LIFO，即后进先出（Last In First Out）的缩写。 把栈比作自助餐厅的餐具架，使它插入和删除操作有了个惯用语，插入操作叫做Push(推进)，删除操作叫做Pop（弹出）。 栈没有长度属性，所有没有返回栈中项目个数的操作。 3.队列 -队列也是种抽象结构，队列的项目从一端入，从另一端出。会计师称之为FIFO,即先进先出(Fast In First Out)的缩写。插入操作在队列的rear（尾部）进行，删除操作在对列的front（头部）进行。 与栈一样，插入操作没有任何约束，整个FIFL行为都体现在删除操作上。无相关术语。Enqueue,Enque,Enq,Enter和Insert都可以表示插入操作。Dequeue，Deque，Deq和Remove都可以表示删除操作。 下面的算法读入数据后按照输入顺序进行输出。 WHILE(more data) Read

Move the CKEditor inline toolbar

由 浪子不回头ぞ 提交于 2019-12-23 09:47:22
问题 I'm using CKEditor 4 inline. Is it possible to change the toolbar location e.g. 50px over the editor div? Thank you! 回答1: If you want to keep this "floating toolbar" behaviour, then you can move it around using these settings. But if you want to keep toolbar in one place, then check this plugin: http://ckeditor.com/addon/sharedspace There's a sample, but you need to build a CKEditor package with this plugin and then you'll be able to check it. 回答2: You can simply give margin-top: -50px; to

WPF Separator position

由 北慕城南 提交于 2019-12-23 09:42:09
问题 I'm using a Separator to draw a vertical line inside a Border. At first this was ok because the line needed to be centered, but now I need to position it at a custom x-position from the left border. Is there a way to do that? <Border x:Name="border" ClipToBounds="True" Background="White" BorderBrush="Black" BorderThickness="2"> <Separator BorderBrush="Black" BorderThickness="2"> <Separator.LayoutTransform> <RotateTransform Angle="90" /> </Separator.LayoutTransform> </Separator> </Border> 回答1:

RecyclerView性能优化及高级使用

由 你说的曾经没有我的故事 提交于 2019-12-23 09:12:04
最近研究应用流畅度专题时，发现RecyclerView里边的坑真多，有很多可以优化的点，在理解优化点之前，最好对RecyclerView的缓存机制有一些了解，比如得知道CacheView和RecycledViewPool的区别和联系，RecyclerView的绘制流程有一定了解，再来谈RecyclerView的性能提升。缓存机制可以看看这篇文章：基于滑动场景解析RecyclerView的回收复用机制原理 还有一篇外国人写的，ViewHolder的探究，这篇文章把RecyclerView的各级缓存作用剖析得很清晰，以前看过很多人写的文章，感觉都是一知半解，总结下： 1、RecyclerView缓存 1.1 RecyclerView主要有三级缓存： （1）Attached scrap & Changed scrap ArrayList<ViewHolder> mAttachedScrap 主要用在插入或是删除itemView时，先把屏幕内的ViewHolder保存至AttachedScrap中，作用在LayoutManager中，它仅仅把需要从ViewGroup中移除的子view设置它的父view为null，从而实现了从RecyclerView中移除操作detachView()。需要新插入的view从cacheView/Pool中找，没找到则createViewHolder

ASP.NET MVC3 Razor - Maintain scroll position on postback

由 徘徊边缘 提交于 2019-12-23 08:11:41
问题 How can i maintain scroll position on postback after sorting a grid table that uses MvcContrib framework? 回答1: The usual way is to use some javascript to set the current scroll position to a hidden field, then restore that position on page load (usually in a jquery ready event). However, that's really just a side effect. You should be doing some kind of ajax command to update the grid rather than a postback, then no scrolling required. 回答2: Use jQuery and client side cookie. $(function(){ var

How can I position one element below another?

由 天涯浪子 提交于 2019-12-23 07:28:13
问题 I want to put one element under another element. I am using position: absolute in CSS. .first{ width:70%; height:300px; position:absolute; border:1px solid red; } .second{ border:2px solid blue; width:40%; height:200px; } <div class="first"></div> <div class="second"></div> I want the blue box to be positioned under the red box. How could I achieve this? 回答1: just give position : relative to second div and top:315px or what ever you want .first{ width:70%; height:300px; position:absolute;

Anchor link landing in wrong position

由 一个人想着一个人 提交于 2019-12-23 07:03:41
问题 Probably a stupid question, but I honestly can't wrap my head around what's going wrong here. http://harrisonfjord.com/thinkinc/ A site I'm building at the moment. I want to make an anchor link at http://harrisonfjord.com/thinkinc/index.php#sponsors. I've set up the anchor to occur just before in the following code: <a name="sponsors"></a> <div class="sponsors"> <div class="sponsors-left"> <h2>Sponsors</h2> <p>Support the lovely folks who support us! Visit their websites, join their mailing

Python爬虫入门 Urllib库的基本使用

由 浪尽此生 提交于 2019-12-23 06:13:26
1.分分钟扒一个网页下来 怎样扒网页呢？其实就是根据URL来获取它的网页信息，虽然我们在浏览器中看到的是一幅幅优美的画面，但是其实是由浏览器解释才呈现出来的，实质它是一段HTML代码，加 JS、CSS，如果把网页比作一个人，那么HTML便是他的骨架，JS便是他的肌肉，CSS便是它的衣服。所以最重要的部分是存在于HTML中的，下面我们就写个例子来扒一个网页下来。 1 import urllib2 2 3 request = urllib2.Request("http://www.baidu.com") 4 reponse = urllib2.urlopen(request) 5 6 print reponse.read() 1 var _chrome_37_fix = document.createElement("style"); 2 _chrome_37_fix.type="text/css"; 3 _chrome_37_fix.setAttribute("data-for","result"); 4 _chrome_37_fix.innerHTML = ".t,.f16,#kw,.s_ipt,.c-title,.c-title-size,.to_zhidao,.to_tieba,.to_zhidao_bottom{font-size:15px;} .ec-hospital
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