overflow | 易学教程

How to prevent hidden element to be shown when focused in Chrome?

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问题 I have a strange problem today, in Chrome, when I focus on an element that is absolutely positioned out of its overflow hidden container, it gets visible in Chrome browser (Mac). I've made a fiddle to illustrate the problem : http://jsfiddle.net/GHgtc/ Html <div id="container"> <a id="inner-button" href="#">You can see me !</a> </div> Css #container{ display: block; background: blue; width: 200px; height: 30px; position: relative; overflow: hidden; } #inner-button{ display: block; background:

Mean of two ints (or longs) without overflow, truncating towards 0

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问题 I'd like a way to calculate (x + y)/2 for any two integers x, y in Java. The naive way suffers from issues if x+y > Integer.MAX_VALUE, or < Integer.MIN_VALUE. Guava IntMath uses this technique: public static int mean(int x, int y) { // Efficient method for computing the arithmetic mean. // The alternative (x + y) / 2 fails for large values. // The alternative (x + y) >>> 1 fails for negative values. return (x & y) + ((x ^ y) >> 1); } ... but this rounds towards negative infinity, meaning the

C++ Buffer Overflow

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问题 I'm trying to teach myself about buffer overflows and exploitation in C++. I'm an intermediate C++ guy, at best, so bear with me. I've followed a few tutorials, but here's some example code to illustrate my question: #include <string> #include <iostream> using namespace std; int main() { begin: int authentication = 0; char cUsername[10], cPassword[10]; char cUser[10], cPass[10]; cout << "Username: "; cin >> cUser; cout << "Pass: "; cin >> cPass; strcpy(cUsername, cUser); strcpy(cPassword,

How to find out if an element overflows (with jQuery)?

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问题 The layout looks like this: Basically all I want is to find out if the ELEMENT went outside the PAGE :) All I know is the page width, which is fixed @ 900 px... 回答1: Calculate the element's width , then get its left , finally subtract it to the page's width and you'll get the overflow. var pageWidth = $(".page").width(); var elementWidth = $(".element").width(); var elementLeft = $(".element").position().left; if (pageWidth - (elementWidth + elementLeft) < 0) { alert("overflow!"); } else {

多行文字溢出隐藏

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兼容 ie 11 浏览器，单行文字隐藏 p{ width: 100%; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;} 第二种方法，多行文字隐藏，只适合谷歌浏览器和移动端使用 p{ overflow: hidden; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; } 来源： https://www.cnblogs.com/Hajar/p/11060166.html

多行文本溢出显示省略号(…)

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(单行)省略号： overflow: hidden; white-space: nowrap; text-overflow: ellipsis; （双行）省略号： overflow: hidden; text-overflow: ellipsis; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; 注：在WebKit浏览器或移动端（绝大部分是WebKit内核的浏览器）的页面实现比较简单，可以直接使用WebKit的CSS扩展属性(WebKit是私有属性) -webkit-line-clamp ；注意：这是一个不规范的属性（ unsupported WebKit property ），它没有出现在 CSS 规范草案中。 -webkit-line-clamp 用来限制在一个块元素显示的文本的行数。为了实现该效果，它需要组合其他的WebKit属性。 display: -webkit-box; 必须结合的属性，将对象作为弹性伸缩盒子模型显示。 -webkit-box-orient 必须结合的属性，设置或检索伸缩盒对象的子元素的排列方式。 text-overflow: ellipsis; ，可以用来多行文本的情况下，用省略号“…”隐藏超出范围的文本。

CSS实现单行、多行文本溢出显示省略号（…）

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如果实现单行文本的溢出显示省略号同学们应该都知道用text-overflow:ellipsis属性来，当然还需要加宽度width属来兼容部分浏览。实现方法： 1 p{ 2 overflow: hidden; 3 text-overflow:ellipsis; 4 white-space: nowrap; 5 } 效果如图：但是这个属性只支持单行文本的溢出显示省略号，如果我们要实现多行文本溢出显示省略号呢。接下来重点说一说多行文本溢出显示省略号，如下。实现方法 p{ display: -webkit-box; -webkit-box-orient: vertical; -webkit-line-clamp: 3; overflow: hidden; } p{ display: -webkit-box; -webkit-box-orient: vertical; -webkit-line-clamp: 3; overflow: hidden; } 　　效果如图：适用范围：因使用了WebKit的CSS扩展属性，该方法适用于WebKit浏览器及移动端；注： -webkit-line-clamp用来限制在一个块元素显示的文本的行数。为了实现该效果，它需要组合其他的WebKit属性。常见结合属性： display: -webkit-box; 必须结合的属性

Can I detect an overflow event in jquery?

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问题 I've seen this, but I am wondering if there is any way to detect an overflow event . I have a div that gets resized by some jquery code, but then at some point later the content of that div changes and the css height:auto rule is no longer effective because a previous event set the height, so the display messes up. I want to be able to catch the overflow event so I can reset the height of the div to auto. Is this possible? 回答1: I'm not sure if this is helpful at all, but I thought it was

Overflow attribute on <td> does not create a scrollbar

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问题 I trying to create a table cell <td> with an overflow but it doesn't work... There's my CSS code: td.blog_content { max-height: 50px; overflow: auto; width: 360px; text-align: left; padding: 2px; } And my HTML: <td class="blog_content"><?php echo $blog['content']; ?></td> It would create a simple box with a scrollbar if the text is too long... 回答1: Try wrapping it in a <div> . I'm pretty sure the overflow attribute is not defined for a <td> element, at least in HTML4 it's not. <td class="blog

SQL Server 索引维护索引碎片填充因子

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一、元数据函数sys.dm_db_index_physical_stats分析碎片 DECLARE @db_id SMALLINT; DECLARE @object_id INT; SET @db_id = DB_ID(N'test'); SET @object_id = OBJECT_ID(N'dbo.TrackLog') SELECT database_id,object_id,index_id,index_depth,avg_fragmentation_in_percent,page_count FROM sys.dm_db_index_physical_stats(@db_id,@object_id,NULL,NULL,NULL); 下面看看统计信息的说明：列名数据类型说明 database_id smallint 表或视图的数据库 ID。 object_id int 索引所在的表或视图的对象 ID。 index_id int 索引的索引 ID。 0 = 堆。 partition_number int 所属对象内从 1 开始的分区号；表、视图或索引。 1 = 未分区的索引或堆。 index_type_desc nvarchar(60) 索引类型的说明： HEAP CLUSTERED INDEX NONCLUSTERED INDEX PRIMARY XML INDEX